Derek Sanderson was a key player with the Big Bad Bruins in the 1970s. At one point the highest-paid athlete in the world, Sanderson played with and against the era's legends, winning two Stanley Cups and assisting on Bobby Orr's famous diving goal in 1970. Off the ice, "Turk" was one of a kind. He drove a burgundy Rolls-Royce, wore a fox coat and, when asked what winning the Stanley Cup meant to him said, "The difference in the money is whether I take a college chick to Cape Cod or a Playmate to France." But behind the glory, Sanderson was an alcoholic and an addict. He bottomed out, losing it all, and ended up sleeping under bridges. At one point he was so sick, he had to use crutches to walk.

Crossing the Line is about Sanderson's crazy days as a player but also about his road back to health. Sanderson has spoken to hundreds of thousands of young people about the dangers of his former lifestyle and now helps young athletes and others to avoid the pitfalls of instant fame.