'The Killer Couple' is the story of Gerald Gallego and Charlene Williams, a husband and wife serial killing double act that went on a reign of terror in the late 1970s, kidnapping, sexual assaulting, raping, and murdering nine women and one man. The gruesome double act was inspired by by Gerald Gallego's 'sex slave' fantasies, with his wife later claiming that she had been forced to participate in the rampage, thus ensuring leniency from the judge when their cases came to court.

The True Crime Shorts series is intended to give the reader a short, concise account of some of the most gruesome crimes in modern times. Each book provides the reader with the essential facts concerning a serial killer, along with analysis that tries to comprehend their motives; no distractions, just the essential facts, allowing the reader to master the case in the shortest time possible.