Alex Gibney's Crazy, Not Insane HBO documentary trailer delves into the psychology of convicted murderers

Crazy, Not Insane, premiering on HBO and HBO Max on Nov. 18, follows Dr. Dorothy Otnow Lewis, a psychiatrist who has dedicated her career to studying murderers and seeking answers as to why people kill, according to HBO. The film explores her lifelong attempts to look beyond the grisly details of homicides and into the hearts and minds of the killers themselves.