Steve Fishman, Narrator

Right away, a very different version of Mad Dog Mayer is on display. The lap dog version.

Right away, a very different version of Mad Dog Mayer is on display. The lap dog version.

For Collier, this is the first time in six months that he's been in the same room as his father.

For Collier, this is the first time in six months that he's been in the same room as his father.

Inside, Coyier might be angry, but on the outside, he's not showing it. He's engaging, polite. He calls Mayor, sir. He's a little nervous, but at times it seems he's almost having fun. Like when he's asked, did he see a jackhammer around the house?

Inside, Coyier might be angry, but on the outside, he's not showing it. He's engaging, polite. He calls Mayor, sir. He's a little nervous, but at times it seems he's almost having fun. Like when he's asked, did he see a jackhammer around the house?

Then Mad Dog notices something. Collier has his asthma inhaler with him. It's in his hand.

Then Mad Dog notices something. Collier has his asthma inhaler with him. It's in his hand.

Collier might speak like an adult, but Mad Dog has just made the point. He's a vulnerable kid. And emphasizing that makes everything he's about to say about his father much more powerful. Mayor now directs Collier to the night his mother disappeared, December 31st, 1989. He was an ear witness. First, there was a scream. That was his little sister. She slept in Noreen's room.

Collier might speak like an adult, but Mad Dog has just made the point. He's a vulnerable kid. And emphasizing that makes everything he's about to say about his father much more powerful. Mayor now directs Collier to the night his mother disappeared, December 31st, 1989. He was an ear witness. First, there was a scream. That was his little sister. She slept in Noreen's room.

Collier believed the commotion was coming from his mother's bedroom, across the hall from his own. He couldn't say what the thuds were, but it sounded like something bad was going on.

Collier believed the commotion was coming from his mother's bedroom, across the hall from his own. He couldn't say what the thuds were, but it sounded like something bad was going on.

Jurors might have thought they knew all about Dr. Jack Boyle's peccadilloes, his infidelities, his tall tales. But Collier says he's much worse than you think. The little boy who sometimes has trouble breathing is about to deliver his father a devastating blow.

Jurors might have thought they knew all about Dr. Jack Boyle's peccadilloes, his infidelities, his tall tales. But Collier says he's much worse than you think. The little boy who sometimes has trouble breathing is about to deliver his father a devastating blow.

Collier recounts other incidents, too, involving Noreen. Collier says he wanted to protect his mother, but couldn't.

Collier recounts other incidents, too, involving Noreen. Collier says he wanted to protect his mother, but couldn't.

Collier says Jack's anger was often directed towards his mom.

Collier says Jack's anger was often directed towards his mom.

Mayer finishes with Collier after about an hour. He has to like what he's heard. Collier offered more circumstantial evidence that something terrible happened the night of Noreen's disappearance. But the real victory for Mayer is this. Collier testified to the side of Jack his adoring patients never saw, a sadist who terrorized his wife and son.

Mayer finishes with Collier after about an hour. He has to like what he's heard. Collier offered more circumstantial evidence that something terrible happened the night of Noreen's disappearance. But the real victory for Mayer is this. Collier testified to the side of Jack his adoring patients never saw, a sadist who terrorized his wife and son.