Self-mutilation is a behavior so shocking that it is almost never discussed. Yet estimates are that upwards of eight million Americans are chronic self-injurers. They are people who use knives, razor blades, or broken glass to cut themselves. Their numbers include the actor Johnny Depp, Girl Interrupted author Susanna Kaysen, and the late Princess Diana.Mistakenly viewed as suicide attempts or senseless masochism--even by many health professionals--"cutting" is actually a complex means of coping with emotional pain. Marilee Strong explores this hidden epidemic...