Steve Fishman, Narrator

He felt terrible for him. And the photos did help sharpen Dave's understanding. Kaya was being supplanted. So was Noreen. Sherry and her kids, they were Jack's family now.

He felt terrible for him. And the photos did help sharpen Dave's understanding. Kaya was being supplanted. So was Noreen. Sherry and her kids, they were Jack's family now.

Dave figured if Jack was hoping to make a fresh start in Erie with a new wife and a new house, then Noreen must have been in the way. Dave was now convinced the Erie house was a key to Noreen's disappearance.

Dave figured if Jack was hoping to make a fresh start in Erie with a new wife and a new house, then Noreen must have been in the way. Dave was now convinced the Erie house was a key to Noreen's disappearance.

Collier constantly had more tidbits to report to Dave. He'd call Dave a couple times a week. Any reason to reach out was a good one.

Collier constantly had more tidbits to report to Dave. He'd call Dave a couple times a week. Any reason to reach out was a good one.

So Collier kept sharing intel with Dave about his father's movements. And Jack was constantly on the move. By this point, December 1989 into January 1990, Jack was leading a kind of double life. He wasn't just going back and forth between Mansfield and Erie to relocate his office, a three-hour drive each way. He was staying at Sherry's place most nights, then getting up at 5 a.m.

So Collier kept sharing intel with Dave about his father's movements. And Jack was constantly on the move. By this point, December 1989 into January 1990, Jack was leading a kind of double life. He wasn't just going back and forth between Mansfield and Erie to relocate his office, a three-hour drive each way. He was staying at Sherry's place most nights, then getting up at 5 a.m.

and hurrying back to the Boyle family residence where, most mornings, Collier found him sleeping on the couch in the living room. Apparently, Jack was intent on keeping up appearances. But according to Collier, in other ways, he let his appearance slip.

and hurrying back to the Boyle family residence where, most mornings, Collier found him sleeping on the couch in the living room. Apparently, Jack was intent on keeping up appearances. But according to Collier, in other ways, he let his appearance slip.

And then a tip came into the Mansfield Police Department. This tip changed everything for Dave. An anonymous woman called. She said she worked for a friend of Jack's and she'd rented a piece of machinery for Dr. Boyle, a jackhammer. Had Dr. Boyle taken up manual labor after all? So you find out that he rented a jackhammer. What's your reaction then?

And then a tip came into the Mansfield Police Department. This tip changed everything for Dave. An anonymous woman called. She said she worked for a friend of Jack's and she'd rented a piece of machinery for Dr. Boyle, a jackhammer. Had Dr. Boyle taken up manual labor after all? So you find out that he rented a jackhammer. What's your reaction then?

The cops visited Easy Rental in Mansfield. According to the store manager, the man who rented the jackhammer was definitely Jack. He paid for it with a personal check, given his driver's license's ID. He picked up the jackhammer on December 29th. Noreen went missing in the early hours of December 31st. To Dave, the way those dates fit together sure seemed suspicious.

The cops visited Easy Rental in Mansfield. According to the store manager, the man who rented the jackhammer was definitely Jack. He paid for it with a personal check, given his driver's license's ID. He picked up the jackhammer on December 29th. Noreen went missing in the early hours of December 31st. To Dave, the way those dates fit together sure seemed suspicious.

Noreen disappears, and Dr. Boyle just happens to have a jackhammer handy. Hmm.

Noreen disappears, and Dr. Boyle just happens to have a jackhammer handy. Hmm.

Keep in mind, Noreen is still just a missing person. There's no body, which means there's no murder. But what if Dave finds Noreen's body buried beneath the Wolf Road house? Well, that would change everything. But now Dave is worried. If Dr. Jack Boyle is a murderer, well, then Collier is living under a murderer's roof. And then Jack makes a proposal to Collier.

Keep in mind, Noreen is still just a missing person. There's no body, which means there's no murder. But what if Dave finds Noreen's body buried beneath the Wolf Road house? Well, that would change everything. But now Dave is worried. If Dr. Jack Boyle is a murderer, well, then Collier is living under a murderer's roof. And then Jack makes a proposal to Collier.

Father and son had taken trips to Florida before, but this one felt different. Collier was afraid.

Father and son had taken trips to Florida before, but this one felt different. Collier was afraid.