Serial Killer Documentaries » Since the 1970's the United States has produced over 1,000 serial killers... The documentary series, 'America's Book of Secrets' takes a closer look at this mostly-American phenomenon... the cases of: Christpher Dorner, Anthony Sowell, the Long Island Serial Killer, Ted Bundy, Jeffrey Dahmer, Dennis Rader, Donald Harvey, John Wayne Gacy, and Lonnie David Franklin Jr are featured...