Steve Fishman, Narrator

This is Mark Davis. Mark was born and raised on the outskirts of Mansfield, in a big family where there was always room at the dinner table. Soon after he met Jack, he learned about the doctor's chronic malnutrition and offered to help.

This is Mark Davis. Mark was born and raised on the outskirts of Mansfield, in a big family where there was always room at the dinner table. Soon after he met Jack, he learned about the doctor's chronic malnutrition and offered to help.

When he first met Jack, Mark was a mechanotherapist, a kind of physical therapist. He and Jack had offices near each other, which was how they crossed paths.

When he first met Jack, Mark was a mechanotherapist, a kind of physical therapist. He and Jack had offices near each other, which was how they crossed paths.

Mark, who enjoyed model planes, was impressed. Soon, Jack was a regular at the Davis dinner table. Most of Mark's extended family lived nearby, and a bunch would regularly show up for dinner.

Mark, who enjoyed model planes, was impressed. Soon, Jack was a regular at the Davis dinner table. Most of Mark's extended family lived nearby, and a bunch would regularly show up for dinner.

So Jack was like part of the family. Yeah. Mark liked Jack, and he was kind of flattered that the prominent doctor took to him too. Despite their different backgrounds, their friendship was easy. They'd prank each other, needle each other, like when Jack tried to ride Mark's bulldozer.

So Jack was like part of the family. Yeah. Mark liked Jack, and he was kind of flattered that the prominent doctor took to him too. Despite their different backgrounds, their friendship was easy. They'd prank each other, needle each other, like when Jack tried to ride Mark's bulldozer.

To Mark, Jack seemed great, rich but not snobby, educated but not pretentious, at home in the country and always up for a good conversation and a good meal. So Mark got to thinking.

To Mark, Jack seemed great, rich but not snobby, educated but not pretentious, at home in the country and always up for a good conversation and a good meal. So Mark got to thinking.

Mark Davis' niece, Sherry Campbell. The fun 28-year-old who was supposed to be terminally ill. The patient. Collier met that day at the country party.

Mark Davis' niece, Sherry Campbell. The fun 28-year-old who was supposed to be terminally ill. The patient. Collier met that day at the country party.

Collier had no idea what was going on between his father and Sherry. For all he knew, she was his patient. But he had begun to realize that all was not well between his parents.

Collier had no idea what was going on between his father and Sherry. For all he knew, she was his patient. But he had begun to realize that all was not well between his parents.

What Caillou did know was that the arguments could get heated and that sometimes his father could get real angry.

What Caillou did know was that the arguments could get heated and that sometimes his father could get real angry.

Despite his father's temper, Caillou treasured their time together. He was an 11-year-old boy. He wanted to be around his dad, wanted to impress him, to earn his praise. And so on Father's Day 1989, a few weeks after that party in the country, Collier happily accompanied Jack on another father-son trip, this one to his office to pick up some paperwork.

Despite his father's temper, Caillou treasured their time together. He was an 11-year-old boy. He wanted to be around his dad, wanted to impress him, to earn his praise. And so on Father's Day 1989, a few weeks after that party in the country, Collier happily accompanied Jack on another father-son trip, this one to his office to pick up some paperwork.

On the way home, Jack wanted to make a little detour.

On the way home, Jack wanted to make a little detour.