- [Narrator] Previously on "Queens of Mystery."

- The next director of the Wildemarsh Wellness Retreat will be Grace Mulberry.

(water whooshing) I can't get out!

Help!

- Have you heard?

- Where were you last night?

- At home.

- My sister owns this place and I demand to know what's going on irregardless.

- I heard she won the money to buy this place in a poker game.

Cat Stone to see Lucky Jim.

- Can you explain why we found one of your false nails in the maintenance room and Grace Mulberry's pass card in your bedroom?

- Someone must have planted them.

- The formal engagement of their daughter.

- Hmm.

- To Dr. Daniel Lynch.

- Shall we?

- Please.

Bryant.

Was her husband in the police?

- [Jane] Target on the move.

- Yasmin Hayes couldn't have killed Dr. Isherwood.

I'm her alibi.

- Our finances have taken a bit of a hit recently.

If we close even temporarily, it'll sink the place.

- The Yasmin Hayes we arrested isn't who she says she is.

She's using a false name.

(alarm wailing) (Yasmin panting) (dramatic suspense music) - She's dead.

(playful mysterious music) (playful mysterious music continues) (playful mysterious music continues) (playful mysterious music continues) (playful mysterious music continues) (soft suspense music) (bird cawing) (gravel crunching) - [Narrator] Despite knowing there was a dead body awaiting his forensic eye, Dr. Daniel Lynch was at least grateful the occasion would allow him further opportunity to explain to Matilda the circumstances surrounding his recent engagement.

Or so he thought.

- Natasha, what are you doing?

- I agreed to lend a hand until the cavalry arrived.

Anyway, she was poisoned and I'm off for my beauty sleep.

Inspector, Margot.

- What do we know about the deceased?

- Unusually sir, less than we did an hour ago.

We thought her name was Yasmin Hayes, but that turns out to be false.

PC Foster's searching her room for clues now.

The deceased was undergoing acupuncture when she started having difficulty breathing.

The therapist, Grace Mulberry, raised the alarm, but by the time I arrived, she was dead.

- Your assessment, Dr. Lynch?

- Could be poisoning.

It could be anaphylactic shock.

I'll know more after the post-mortem.

- The evidence suggests the former.

It's the packaging for the acupuncture needles.

There's tiny puncture marks, suggesting a substance was injected to coat the needle.

- And you think this Grace Mulberry unwittingly administered it while performing acupuncture?

- It's a theory.

- I finished searching the deceased's room.

There's nothing to suggest her real identity.

- Mobile phone?

- There's no sign of it.

But I did find this.

(soft suspense music) (bird squawks) (soft suspense music) (soft suspense music continues) - Boss.

- Cat Stone!

Well, I knew you couldn't keep away from here forever.

- I'm here for information, not action.

- Well, let's not be hasty.

Sit, please.

- You hosted a poker game about 20 years ago, where a woman called Angela Isherwood won half a million from a high roller.

- I remember.

I'd never seen either of them before.

Never seen them since.

And the higher roller was worse than you.

Bet thousands on hands he didn't have a chance of winning with.

- I need his name.

- I could look it up for you, but my members do so value their privacy.

- Or we could wait till your man here goes on a break and I could beat it out of you.

(Jim laughs) - Or you could change the habit of a lifetime and try beating me at poker.

- Texas hold 'em or five card draw?

- Five card draw.

- That's me done for the moment.

I'll email you my initial findings.

- Thanks.

- About the engagement.

- Matilda.

Dr. Lynch.

- Sorry, George.

I just need another minute with Sergeant Stone.

- That's okay, George, how can I help?

- Wondered if I could have a word in private?

- We're all colleagues here.

Say what you need to say.

- I was wondering if you'd like to go to dinner with me tomorrow night.

- Oh.

Yes.

That would be really nice.

Thank you, George.

- Great.

I'll be in touch.

Dr. Lynch.

(soft music) (car door thuds) (card thwaps) (birds tweeting) (card thwaps) (birds tweeting) - Oh dear.

Looks as though I'm about to take all your money again.

(Jim laughs) - I'll see you and raise you.

(birds tweeting) (distant yelling) - Uh uh, and the membership book.

(soft suspense music) - I've shown you mine, now you show me yours.

You bet your precious motorbike on a pair of lousy queens?

(Jim laughs) - Not just one pair.

You can always count on four queens to get you out of trouble.

Now give me that name.

(soft country rock music) - What about your money?

- Give it to a gambling charity of your choice.

- You heard the lady.

(birds tweeting) - Have a good day at work.

(bell dings) - Sir, I wasn't expecting you.

(bell dings) - I know you weren't Stone, but.

- [Narrator] What Inspector Thorne wanted to say next was.

- I woke up this morning and for some inexplicable reason, all I want to do is tango.

(upbeat tango music) - [Narrator] But what he chose to say was.

- I was passing and wondered whether you found those missing mobiles.

- Not yet, sir.

But I've been going through the phone company records and it shows that Yasmin Hayes, or whoever she was, sent Dr. Isherwood text messages on the day of her death.

But it doesn't say what those texts were.

- That's very good, Sergeant.

Well done.

Jane.

- Inspector.

- I'll see you at the station.

(bell dings) - We checked Yasmin against the National Crime Database when she was arrested.

Fingerprints came back negative, but we're still waiting on DNA.

- Tell the lab to make it a priority.

- Dr. Lynch.

- No toxicology report yet, but I thought you'd want to know that the autopsy revealed the victim was a heart transplant recipient.

- The tablets we found in her room.

Could they be immunosuppressants?

- Yes, transplant patients have to take them for life after surgery.

- I have a question.

Why can't we use dental records to find the victim's real identity?

- Because they're only used to crosscheck someone's identity once there's a name linked with a body.

There is no national dental database we can check against.

- But there is a National Transplant Database.

How long ago do you estimate Yasmin had her heart transplant?

- Judging by the age of her scars, 15 years ago, maybe longer.

- Meaning she'd have been a child at the time.

How many heart transplants take place each year on those under 16?

- A handful.

- If we compile a list of patients on the database who match the victim's profile at the time.

- Then we can cross reference those names with her dental records to find a match.

- Exactly.

- Well don't just stand there, Stone.

Get on with it.

(soft suspense music) - Where did you learn to do this stuff?

- You'd be amazed what you can learn at night school.

- Why exactly are we breaking into Dr. Isherwood's office?

- Because we need to see the text messages between her and Yasmin Hayes on the day of her death.

- We don't have either of their phones.

- We don't need them.

(machine beeping) Yes!

- I've narrowed down the list of heart transplant recipients to 19.

- Where do we start?

- Contact dental practices near their home address.

- If the dental records match the victim, it will reveal her real identity.

Clever.

- Let's get started.

- Mobile phones are often linked to computers with apps that show text messages on both devices.

Give me five minutes.

I'm sure I can bypass the firewall.

- Let me, Dr. Isherwood mentioned her poor memory when we first met.

People like her tend to keep a list of their passwords close to hand.

(keys clacking) Bingo.

- Open that picture file.

Oh!

Who's that naked man?

- I'm not certain, but I think I recognize that mole on his inner thigh.

- Really?

- What?

I'm widowed, not dead.

- I've got a hit!

The dental records match a woman called Kelly Underfield.

According to the transplant database, she received a new heart 20 years ago.

Age six.

- Good work, Foster.

- It was Sergeant Stone's idea.

- Yes.

Well done, Stone.

- Terry, dig up everything you can on Kelly Underfield.

I'm going to the retreat to see if anyone's heard of her.

- Sarge.

- [Instructor] And breathe and stretch and breathe and stretch and breathe and stretch.

- You joining us, ladies?

- Could we talk to you?

- [Instructor] The breath is the prana that powers your life.

- Take five ladies.

Okay?

I'll be back with you.

- Care to explain why the two women who exchanged this photo are now both dead?

- I admit it, I'm a fraud.

I'm not a ladies' man at all.

I married my childhood sweetheart.

She passed away a few years ago and I found myself single for the first time in my life.

But then I met Yasmin, and for a brief moment, I thought, who am I kidding?

I don't know what I thought.

- And the naked photo?

- [Stephen] Yasmin kept asking me to send her an intimate photo.

Naively, in the end, I gave her what she wanted.

- And I'm guessing that's when things changed between you?

- Yasmin threatened to send the photo to Dr. Isherwood unless I gave her money.

- But you refused to be blackmailed.

- No, I gave her the money, but it wasn't enough.

She kept squeezing me for more until I'd used up my entire life savings.

Nearly 7,000 pounds.

That evening, Yasmin rang to say she'd texted Dr. Isherwood the photo.

It was just on 10 when she rang.

I knew Dr. Isherwood would be taking her nightly steam and wouldn't have seen it yet.

I crept back in and went through Dr. Isherwood's locker.

I was going to delete the picture, but her phone was locked.

So I took the phone instead.

- And what about Yasmin's phone?

- I used my pass card to enter her room and stole it as she slept.

It's why we were arguing yesterday.

Yasmin knew I'd taken her phone but couldn't prove it.

Look, I know what I did was wrong.

I'm an idiot, but that doesn't make me a killer.

- Why do I get the feeling you two have been meddling?

- We prefer to think of it as supporting a loved one.

- The missing mobiles.

- Stephen Swift had them all along.

- I'm gonna need more detail.

- It's a long story.

- Oh, oh, I recognize that mole.

- Please don't tell me you've been supporting me as well.

- The high roller Dr. Isherwood won the money from for this place, Paul Underfield.

He practically gave her the cash.

- Underfield?

- You know him?

- Yasmin Hayes's real name was Kelly Underfield.

(phone ringing) Terry?

- I've been looking into Kelly Underfield's whereabouts.

No one's seen her in months.

- Put it on speakerphone.

- No!

- Turns out Kelly was the sole heir to a large inheritance, but she'd blown through the lot.

But then I looked at Kelly's bank accounts.

Two lots of 50,000 have been deposited in the last few weeks, the second one on the morning of Dr. Isherwood's murder, and both came from the wellness retreat.

- Why would Dr. Isherwood pay Kelly 100 grand?

Good work, Terry.

- Well?

- Rowena Walker has been keeping secrets from me.

- The payments to Yasmin are not something I'm in a position to talk about.

- Would you rather I brought in a forensic accountant while you wait things out in a prison cell?

- No.

No, of course not.

- Then I need the truth.

- It's Alastair.

- Dr. Isherwood's brother?

- Have you ever experienced love at first sight, Sergeant?

- I might have.

- I know we've nothing in common, but Alastair has a good heart and that's enough for me.

The only problem is, I've never had the courage to tell him how I feel.

- I can't make out a word she's saying.

- Oh, I need to go.

I'm hosting a party at three.

- Mattie's in the middle of a double murder investigation and you're hosting a party?

- Yes, a facelift party.

- Oh, can I come - Irregardless.

- I've always done the retreat's books.

Two months ago, I spotted 50,000 pounds being siphoned out of the company bank account.

Dr. Isherwood fobbed me off the first time, but when it happened again a few days ago, I demanded an explanation.

- Is that what you and Dr. Isherwood were really arguing about the other day?

- Dr. Isherwood wouldn't tell me why, but said that Yasmin was blackmailing Alastair.

- Alastair?

- He went to her for help and she agreed to pay Yasmin off.

Dr. Isherwood knew I had feelings for Alastair.

She told me he'd get into terrible trouble if I said anything.

- You should have told me the truth when I first asked.

- I was worried you'd think he was caught up in the murders.

- And what about you?

You weren't angry with Dr. Isherwood for making Grace the next retreat director?

(phone ringing) Dr. Lynch?

- I've had the toxicology results back on Kelly Underfield.

Looks like we were both right.

- Right how?

- She was poisoned and she died of anaphylactic shock.

She was injected with bee venom.

- Bee venom?

- [Daniel] I checked her medical records.

She was allergic to bee stings.

- Thanks.

Have the report sent to the station.

- Did you say bee venom?

- Why?

- Well, we use it in our facial treatments.

We keep supply of it in the medicine cabinet.

- [Matilda] The guests fill in a medical questionnaire when they arrive?

- Always.

- And who'd have access to those records?

The staff?

- And probably any regular guests, well, if they knew where to look.

- Where do you keep the bee venom?

- Over here.

- What's that?

- It's a security camera.

Dr. Isherwood was worried someone was stealing.

She asked me to set it up months ago.

- [Narrator] As Matilda eyed the hidden camera, she couldn't help but feel things were finally coming into focus.

(soft suspense music) (soft suspense music continues) - What are we looking at?

- Security footage from inside the retreat's medicine cabinet.

Dr. Isherwood was the only one qualified to book out medicine.

- So as well as blackmailing Stephen Swift, Kelly, AKA Yasmin Hayes, was also blackmailing Alastair Isherwood, who in turn was getting his sister to foot the bill?

- Looks like it, sir.

That's not Dr. Isherwood.

That's her brother, Alastair.

He's the one who's been stealing.

- And he had reason to want Kelly Underfield dead.

- Why would he want to kill his sister?

- Maybe he was angry that Grace was promoted instead of him.

By killing Dr. Isherwood, he inherits the retreat and can be in charge.

Put a BOLO out for Alastair Isherwood.

I want him found and brought in for questioning.

- Sir.

(birds tweeting) (doorbell rings) - It's party time!

(bell dings) - Should we run after him?

- No.

- Going somewhere, Mr. Isherwood?

- [Inspector] Do you wanna tell us about this?

- It's just a sideline, chance to earn a bit of extra cash.

- Did your sister know what you were up to?

- Not to start with, but yes.

Eventually she found out.

- I can't imagine it was easy growing up in your sister's shadow.

- She was so good at everything.

- And that made you jealous.

- No, I admired it.

Despite what everyone thinks, I'm not stupid.

I know that if it wasn't for Angela, I wouldn't have this job.

I just, I wanted to have something of my own, something I was good at.

- But then Yasmin found out about your illegal facelift parties.

- You have to be level six qualified to administer the dermal fillers.

I failed the test three times.

Yasmin knew I'd be struck off the nursing register if word got out.

Please, please, please.

Let me explain.

She threatened to blab unless I gave her money.

The problem was I was broke.

- So you went to your sister.

- Alastair, for God's sake!

- [Alastair] I've not seen Angela that mad since we were kids.

- And she agreed to pay Yasmin 100,000?

- 100?

Yasmin only wanted 10.

- I think you were angry your sister was gonna promote Grace Mulberry instead of you, so you killed her.

- No!

- Then you planted the false nail on the missing pass card to make it look like Yasmin Hayes was the killer.

- No!

- And when that failed, you tainted acupuncture needles with bee venom stolen from the medicine cabinet so that Grace Mulberry would inadvertently poison Yasmin.

- I wouldn't!

I couldn't!

- This is you stealing supplies from the medicine cabinet.

- Oh, you've got it all wrong.

I was stealing hyaluronic acid for the dermal fillers.

I'd never hurt Angela.

I loved her.

- You had the means, motive, and opportunity for both murders.

- No!

- Alastair Isherwood, I'm charging you with the murders of Dr. Angela Isherwood and Kelly Underfield, also known as the Yasmin Hayes.

- Please.

I didn't do it!

- I'm having dinner with Beth and Cat later.

You're welcome to join us if you'd like.

Mattie.

- Sorry.

No, I'm fine, thanks.

I promised the inspector I'd have all the paperwork done by morning.

- Do you really think Alastair is guilty?

- Inspector Thorne says it's the court's job to decide guilt or innocence.

Ours is to gather and present the evidence.

- Sounds like you think the killer is still out there.

- Everything points to Alastair being the murderer.

My head tells me it's him, but.

- Your heart tells you something different.

- [Narrator] It was at that precise moment that Matilda thought she might be onto something.

- My heart tells me something different.

- Mattie?

- [Narrator] And a heartbeat later when she knew she was.

- They match The dates.

They all match.

- Where are you going?

- The station.

- Ugh, do we have to go to this keep fit class?

- It'll be good for us.

(phone ringing) Oh, it's Jane.

Hello?

- Matilda's onto something.

- Did she say what?

- No, just something about the dates matching and then she was off.

- [Announcer] Attention, the healthy heart workout will begin in two minutes in the dance studio.

- What is that noise?

- It's just the intercom announcing the start of our healthy heart workout.

- Oh, healthy heart workout.

Oh, I need one of you to come with me to Dr. Lynch's practice.

- Oh yeah.

Me, me, I'll go.

- Oh.

Looks like you've got a reprieve.

- Yeah.

- Bye.

- Bye.

Oh, am I too late for an appointment?

- I was heading home.

- It won't take long.

- I'll wait here.

- Take a seat.

What seems to be the problem?

- Well, I've been having these dizzy spells and I almost fainted last week.

(keys clacking) (bright suspense music) (keys clacking) (object thuds) - Did you hear that?

- No.

Oh.

Oh, my head's spinning.

I think I'm having another one of my turns.

Oh, you know what?

I'm feeling much better.

Thanks, Doc.

You're a miracle worker.

- I haven't done anything.

- Must be the placebo effect.

- Thank you.

- [Narrator] Despite a desire to believe the best of people, Dr. Daniel Lynch couldn't help but feel his affections for all things related to Matilda had ironically been taken advantage of by those directly related to her.

Affections he now felt compelled to act upon.

(dramatic orchestral music) (dramatic orchestral music continues) - Hello?

Hello?

(fire crackling) (soft suspense music) Hello?

Anybody there?

(fire crackling) (soft suspense music) - Where's Grace?

- She was in the maintenance room.

- Show me.

- It's this way.

(dramatic suspense music) - Why would she switch off the state room's fire alarm?

- Call the fire brigade.

Get everybody out.

- Where are you going?

- To stop Grace Mulberry from burning this place to the ground.

(fire crackling) (soft suspense music) - I'm sorry, Beth.

I couldn't let you get in the way of my plans.

By the time these chlorine tablets react with the alcohol and start the fire, I'll be long gone.

- Why do you want to burn the place down?

- Why do I want to burn down the retreat?

- Because it was built with blood money.

- Stay back.

One step closer, we all go up in flames.

- Everyone gather on the flagstones.

- Have you seen Matilda?

- She's gone to the state room.

- Kelly Underfield wasn't only blackmailing Stephen Swift and Alastair, she was also blackmailing Dr. Isherwood.

You and your parents weren't the only people in that car accident.

You had a younger brother, Miles, who like you ended up in a coma in Dr. Isherwood's intensive care unit.

Kelly was six at the time.

She had a genetic heart condition and she had been waiting years for a heart transplant.

With Kelly days from death, her father heard about your story and I'm betting he bribed Dr. Isherwood to give Kelly Miles' heart.

Tell me I'm wrong.

- Dr. Isherwood made it look like Miles wasn't gonna pull through.

She switched off his life support so that his heart could be used to save Kelly's life.

- And Dr. Isherwood used Paul Underfield's bribe to set up the wellness retreat.

- Natasha!

- Daniel, what are you doing here?

- Where's Matilda?

- Oh!

- Please.

It's important.

- I think she's in the state room.

Daniel!

Daniel!

- When did you realize Kelly had your brother's heart?

- Not long after I saw her heart transplant scar.

- I was six years old.

- Therapists are like hairdressers.

Customers like to tell you their life story.

She kept going on about how ill she'd been as a child, how she'd had this big heart transplant operation.

But she didn't stop there.

She bragged about how before her father died, he passed on his big secret about how he saved her life.

He boasted about paying an intensive care doctor half a million to switch off some dying kids' life support early so that Kelly could have his heart.

It was like she was proud of it.

- And you knew that doctor was Angela Isherwood.

- The dates of Miles's death and Kelly's operation were too close for it to be a coincidence, it had to be her.

- So you planned your revenge.

- Wouldn't you?

- Help me!

- If you found out someone you trusted had been lying to you your whole life?

Everything Dr. Isherwood did for me, it was born out of guilt for killing my brother.

- But why frame Kelly for Dr. Isherwood's murder?

- Miles was pure, honest, too good for this world.

Kelly didn't deserve his heart.

She was rotten to the core.

- Which is why when my aunts uncovered an alibi for Kelly, you decided to kill her as well.

- Matilda!

- Say goodbye to your aunt, Sergeant.

(dramatic music) (Matilda panting) (siren whoops) (indistinct chatter) - Grace had been one step ahead of us this whole time, feeding us suspects while deflecting suspicion from herself.

When Lord Overshaw supplied an alibi for Yasmin, AKA Kelly Underfield, Grace decided to kill her as well and set Alastair up for both murders.

- But why Alastair?

- Dr. Isherwood promoting Grace instead of Alastair gave him motive.

Plus Grace was the one who set up the security camera in the medicine cabinet.

When she saw footage of Alastair stealing the hyaluronic acid, she knew she could use it to make us believe he was the one who stole the bee venom.

With everything in place, Grace killed Kelly Underfield and made it look like she'd been duped into administering the fatal poison.

- And Dr. Isherwood went through with the charade that she won all the money in a poker game.

- Because she knew it would be impossible to hide a half million pound bribe.

- Money won in licensed gambling premises in the UK is tax-free and totally legit.

- It was the perfect way for her to launder the money without drawing suspicion, especially as no one knew who she won the money from.

- Until Kat uncovered the truth.

- Dr. Isherwood thought it was all in the past, but it all came back to haunt her when Kelly Underfield booked into the retreat under a false name and started blackmailing her.

- Well done in getting your man, Stone.

I mean, woman.

- Thank you, sir.

- I expect a full report on my desk by the morning.

- Sir.

- Ladies.

- No.

No.

No, no, no, no, no.

- Yes!

(gentle music) (birds tweeting) (gentle music continues) - Oh, do hurry up, Mummy.

- Oh, you'll be fine.

- I don't know why I've put on weight since I've been here, sweet pea.

Must be my metabolism.

- Beth, do you have a moment?

- See you in a sec.

(gentle music) (birds tweeting) - Thank you for everything you've done.

I'd still be under arrest if it weren't for you.

- There's still the matter of the facelift parties.

- I've decided to take early retirement.

I've written to the nursing board this morning to let them know.

- And what about this place?

- It's mine in name, but I'm going to leave the day-to-day running to our new retreat director.

- Congratulations.

- Thank you.

The retreat's reputation has taken a serious blow, but I'm determined to turn that around.

- Thanks again for everything.

- Did you ever tell Alastair how you feel about him?

- Mm.

Decided against it.

After recent events, I've started thinking that the idea of love at first sight is a load of old nonsense.

It's time I moved on with my life.

Now, if you'll excuse me, Sergeant, I have a wellness retreat to run.

- What did Lover Boy want?

- Dinner.

- He asked you out?

- No need to look quite so surprised.

He figured I'd already seen him naked.

So what's the worst that could happen?

- Well, I hope you said no.

- I said I'd think about it.

Well, I'll ring him later and let him down gently.

- Very sensible.

I just don't think he's your type.

That's all.

- [Narrator] Although looking forward to her date with George, Matilda knew she wouldn't be able to enjoy the evening until she had first investigated the marital history of a certain person of interest.

The resident of 33 Brick Lane.

(soft music) (doorbell rings) - Edith Bryant?

Sorry to bother you.

I'm Matilda Stone.

- Yes?

- I was wondering, was your husband Chief Inspector Bryant?

- I think you must be mistaken.

I've never been married.

I'm sorry.

I have to go.

- [Narrator] And while Matilda considered ringing Edith Bryant's doorbell for a second time, her Aunt Beth was considering a ring of a very different kind.

(soft bright music) (birds tweeting) - Hi Stephen.

It's Beth Stone.

Look, I'm sorry.

I'm afraid I can't make dinner.

No.

But I wouldn't say no to a drink sometime.

- Matilda, sorry, I mucked up.

There's a private party tonight.

They can't give us a table.

- No, no, no.

The sign's all wrong.

It needs to be higher.

I specifically told you not to invite any of your work colleagues.

I mean, I ask you to do .

.

.

- [Narrator] Seeing Daniel, Matilda wondered if the notion of love at first sight was, as Rowena Walker so eloquently put it, a load of old nonsense, and whether, like Rowena, it was time she too moved on.

- Don't worry about it.

Let's see to the Crate Gatsby tonight instead.

- If you don't mind?

- Of course not.

Come on.

- Goodbye, Daniel.

- Yes, that's right - Matilda, quick question.

- Yeah.

- [George] Do you always walk that slowly?

- [Matilda] Sorry.

Oh, your shoelace is untied.

Last one to the restaurant pays for dinner.

- [George] Hang on, that's not fair.

Matilda!

- [Narrator] Despite attempts to move on with their lives, the recent return of Matilda has forced certain local residents to relive what we shall call less virtuous aspects of their past.

- I panicked.

- [Narrator] Aspects of their past they hoped had long since been buried.

- I didn't know what else to say.

What am I gonna do when she finds out the truth?

Hello?

Hello?

Are you still there?

(wheels creaking) (soft suspense music) (dramatic suspense music) (bird caws) (playful mysterious music) (playful mysterious music continues) (playful mysterious music continues) (playful mysterious music continues)