His freshman year of college, Alex Lemon was supposed to be the star catcher on the Macalester College baseball team. He was the boy getting every girl, the hard-partying kid everyone called Happy. In the spring of 1997, he had his first stroke. For two years Lemon coped with his deteriorating health by sinking deeper into alcohol and drug abuse. His charming and carefree exterior masked his self-destructive and sometimes cruel behavior as...