American Ripper is the true story of Gerard John Schaefer, a Florida law enforcement officer who was a prolific serial killer in the late 1960s early 1970s. The decade that was thought to be filled with love, peace, and happiness became a new dark age, breeding more serial killers than any other time in US history including Charles Manson, the Zodiac Killer, the Son of Sam, John Wayne Gacy, and Ted Bundy, who was held in the same prison as Schaefer and whom he both idolized and resented for the recognition his crimes brought him, a recognition Schaefer never received.

The names of notorious serial killers are usually well-known; they echo in the news and in public consciousness. But most people have never heard of Israel Keyes, one of the most ambitious and terrifying serial killers in modern history American Predator is the ambitious culmination of years of interviews with key figures in law enforcement and in Keyes's life, and research uncovered from classified FBI files. Callahan takes us on a journey into the chilling, nightmarish mind of a relentless killer, and to the limitations of traditional law enforcement.

The summer of 1983 was like no other in Joliet, Ill., a hard-working, rough-and-tough blue-collar industrial city an hour’s drive southwest of Chicago. During one of the hottest summers on record, the citizens of Joliet, were terrorized by an elusive serial-killing madman.

Verteran investigative journalist Stevie Cameron first began following the story of missing women in 1998, when the odd newspaper piece appeared chronicling the disappearances of drug-addicted sex trade workers from Vancouver's notorious Downtown Eastside. It was not until February 2002 that pig farmer Robert William Pickton would be arrested, and 2008 before he was found guilty, on six counts of second-degree murder. These counts were appealed and in 2010, the Supreme Court of Canada rendered its conclusion.

For 10 years, the California Interstate 5 highway was haunted by a dangerous serial killer. Incredibly skilled at staying ahead of the investigators as the bodies started to pile up, there wasn't enough evidence to charge the culprit with murder even once he'd been identified. Instead, they had to build a first-degree murder case in a few months while the killer was locked up on an assault conviction. Key to this was a cast of four: Vito Bertocchini, Kay Maulsby, Ray Biondi, and Faye Springer.