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48 Hours

Trained to Kill: The Dog Trainer, the Heiress and the Bodyguard

Sat, 10 May 2025

Description

Mark Stover was a talented dog trainer, better known as the dog whisperer of the Pacific Northwest. He was charismatic and attracted the attention of wealthy blonde heiress Linda Opdyke. They built a business together, along with a marriage. But Linda said Mark also had a dark side and when she tried to leave the marriage, he obsessively followed. She sought the protection of a security expert Michiel Oakes who soon became the new love of her life, her knight in shining armor. But when blood was found in Mark’s home and he was reported missing, detectives went looking for Michiel. In this dark love triangle, just who was the hunter and who was the hunted? If you liked this episode of Trained to Kill, you can listen to the next episode of the series here: https://link.podtrac.com/wka6fu8r To learn more about listener data and our privacy practices visit: https://www.audacyinc.com/privacy-policy Learn more about your ad choices. Visit https://podcastchoices.com/adchoices

Audio
Transcription

Chapter 1: Who is Mark Stover and why is he called the Dog Whisperer?

0.249 - 25.12 Peter Van Sant

Hello, listeners. It's 48 Hours correspondent Peter Van Sant. Today, I have a special episode to share with you from my new podcast, Trained to Kill, the dog trainer, the heiress, and the bodyguard. You are about to hear the bizarre story of celebrity dog trainer Mark Stover, who was known as the dog whisperer of the Pacific Northwest.

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26.021 - 44.979 Peter Van Sant

He trained the dogs of the rich and famous with clients including music stars, athletes, and top business executives. But this story isn't just about a dog trainer. It's one of obsession, control, and murder. Here's the first episode.

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45.768 - 67.802 Announcer

You don't have to be a morning person to catch every episode of CBS Mornings. Why? You'll hear the highlights from each broadcast, including our in-depth interviews and profiles by listening to the CBS Mornings On The Go podcast. So go ahead, hit the snooze button. I do it every morning three times because the CBS Mornings On The Go podcast is available on your schedule. Love when that happens.

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68.082 - 74.086 Announcer

Follow and listen to CBS Mornings On The Go on the free Odyssey app or wherever you get your podcasts.

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Chapter 2: What unusual events occurred before Mark Stover went missing?

79.549 - 84.271 Stephanie Slifer

I remember being woken up early in the morning by a hellacious barking.

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85.152 - 103.701 Peter Van Sant

It was 2009, three days before Halloween, a time when the boundaries between the living and the dead become blurred. Stephanie Poore said the dogs next door were going crazy. And they were upset and it was loud.

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103.721 - 106.963 Interviewer

What did you think to yourself when you were lying in bed listening to that?

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109.848 - 116.67 Stephanie Slifer

something was going on over there, and I wanted to get some more sleep, and I was going to have words with Mark.

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118.811 - 153.034 Peter Van Sant

Mark was Mark Stover, Stephanie's next-door neighbor and her boss. Stephanie was a dog trainer at Mark's facility in Anacortes, Washington, an island community about 80 miles north of Seattle. He had built a successful business working with the dogs of the rich and famous and had earned the nickname the Dog Whisperer of the Pacific Northwest. That morning, Stephanie made her short commute to work.

153.695 - 157.697 Peter Van Sant

She assumed Mark had already left to meet a client in Seattle.

158.812 - 172.079 Stephanie Slifer

And I'm on the phone leaving a message with him and he's in the driveway. The car is in the driveway, parked up by the house. And I'm thinking, wow, that's weird, because he really, he's probably going to be, you know, a little antsy because he would have rather been gone by now.

173.08 - 179.123 Peter Van Sant

Mark had a reputation as a bit of a pit bull, intimidating and impatient.

179.803 - 187.031 Stephanie Slifer

I saw who I thought was Mark. going into the house, coming out of the house, putting stuff in the back of the hatch.

Chapter 3: What was Mark Stover's childhood and early life like?

535.073 - 538.635 Victoria Simmons

Show me the motion again with the stick. A handler releases the dog.

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543.769 - 574.39 Peter Van Sant

The dog sprints and bites hard enough to lock onto Mark's leg, which is covered in padding. And a tug of war ensues between the growling dog and Mark. Mark commands the dog to stand down. Right away, the dog lays on the ground looking straight ahead and awaits the next command.

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577.632 - 581.715 Julia Simmons (Mark's niece)

I just thought he was so incredibly interesting.

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583.417 - 590.442 Peter Van Sant

His niece Julia, Victoria's daughter, said Mark sometimes expressed his love for dogs in eccentric ways.

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591.527 - 611.718 Julia Simmons (Mark's niece)

You know, he has this beautiful Porsche 911 and a BMW, and then he has this car called the Dog-A-Lack, the Cadillac. And I swear, half the textile of the carpeting in that car was just dog hair that had woven itself into it.

612.558 - 617.201 Peter Van Sant

She said it smelled horrible. But one day, they went for a drive.

618.706 - 628.528 Julia Simmons (Mark's niece)

And instead of taking the Porsche or the BMW, he takes me in the Doggle. And he said he didn't want his neighbors to know how rich he was.

629.468 - 637.529 Peter Van Sant

But Mark didn't start out rich at all. In fact, just the opposite. And his upbringing was far from easy.

640.41 - 647.351 Victoria Simmons

We went through, our family went through a series of losses early in our childhood. Just seemed to be one after another.

Chapter 4: How did Mark Stover become a renowned dog trainer?

685.216 - 688.437 Peter Van Sant

Their mother's second marriage also then fell apart.

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689.238 - 695.341 Victoria Simmons

And so she remarried again, and he was an alcoholic. Life at home was tough.

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696.641 - 702.044 Peter Van Sant

Mark struggled in school. According to Victoria, the family didn't know how to help him.

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703.404 - 713.369 Victoria Simmons

He got kicked out of high school for smoking dope. I think he was 16. Yeah, he was on a bad path.

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714.149 - 717.951 Peter Van Sant

And then their mother's third husband died of cancer.

718.92 - 732.955 Victoria Simmons

We were broke. Our family was broke, and there was a funeral. And at the wake, family friends brought a German Shepherd puppy for a gift at the wake, which is such an odd choice.

733.576 - 740.303 Peter Van Sant

The German Shepherd puppy was named Gunter. While maybe odd, the gift would be a godsend.

741.027 - 750.495 Victoria Simmons

I've never been able to talk to them and ask them what prompted them to do such an odd thing. But Mark and that dog bonded that very day.

753.718 - 763.066 Peter Van Sant

Mark got in touch with the family's old vet. He encouraged Mark to join the Washington State Search and Rescue Canine Unit.

Chapter 5: Who was Linda Opdyke and how did she meet Mark Stover?

Chapter 6: What signs pointed to foul play in Mark Stover’s disappearance?

206.26 - 225.728 Peter Van Sant

Then Stephanie went up to the house to the bathroom. As she walked up the driveway, she saw tire marks from the car and some spots of blood on the gravel. Stephanie assumed that the blood belonged to Ding, Mark's guard dog. Ding recently had surgery.

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226.368 - 232.211 Stephanie Slifer

I explained it away that Ding must have ripped her stitches out, out here.

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233.373 - 236.695 Peter Van Sant

The blood wasn't the only sign something was wrong.

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237.436 - 240.898 Stephanie Slifer

I could smell the bleach before I even opened the door.

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242.319 - 257.948 Peter Van Sant

Stephanie stepped inside. She noticed a bedroom door that was usually never shut was closed. And as she went into the house, Stephanie saw three big spots on the floor. Did they have a color?

258.649 - 261.671 Stephanie Slifer

It was blood. It was red, dark, dark red.

264.953 - 286.25 Peter Van Sant

Stephanie was worried. She kept calling Mark, but he never answered. Stephanie hoped the blood was from Ding's surgical wounds. She was doing her best to avoid imagining the worst. But the next morning, when she came back to work, she was startled to see Ding sitting by the back door.

287.375 - 304.079 Stephanie Slifer

She was on all fours and she was growling. Something had happened to her. Maybe she had had a stroke. It was obvious one eye was in a horrible mess. We couldn't find Mark. I was calling him. I left a message, Mark, we're really concerned. Where are you? You know, why is Ding here?

304.999 - 307.94 Peter Van Sant

An unsettling feeling hit Stephanie.

Chapter 7: How did Mark's family describe his personality and career?

Chapter 8: What mystery surrounds the relationship between Mark, Linda, and Michiel?

206.26 - 225.728 Peter Van Sant

Then Stephanie went up to the house to the bathroom. As she walked up the driveway, she saw tire marks from the car and some spots of blood on the gravel. Stephanie assumed that the blood belonged to Ding, Mark's guard dog. Ding recently had surgery.

0

226.368 - 232.211 Stephanie Slifer

I explained it away that Ding must have ripped her stitches out, out here.

0

233.373 - 236.695 Peter Van Sant

The blood wasn't the only sign something was wrong.

0

237.436 - 240.898 Stephanie Slifer

I could smell the bleach before I even opened the door.

0

242.319 - 257.948 Peter Van Sant

Stephanie stepped inside. She noticed a bedroom door that was usually never shut was closed. And as she went into the house, Stephanie saw three big spots on the floor. Did they have a color?

258.649 - 261.671 Stephanie Slifer

It was blood. It was red, dark, dark red.

264.953 - 286.25 Peter Van Sant

Stephanie was worried. She kept calling Mark, but he never answered. Stephanie hoped the blood was from Ding's surgical wounds. She was doing her best to avoid imagining the worst. But the next morning, when she came back to work, she was startled to see Ding sitting by the back door.

287.375 - 304.079 Stephanie Slifer

She was on all fours and she was growling. Something had happened to her. Maybe she had had a stroke. It was obvious one eye was in a horrible mess. We couldn't find Mark. I was calling him. I left a message, Mark, we're really concerned. Where are you? You know, why is Ding here?

304.999 - 307.94 Peter Van Sant

An unsettling feeling hit Stephanie.

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