In 1980, a famous Los Angeles, California, boulevard became the haunt of an unlikely pair of serial killers. Together, Douglas Daniel Clark and Carol Mary Bundy prowled Sunset Strip, legendary for its Hollywood nightlife. The 32-year old Clark was a suave womanizer, and Bundy, five years older, was a depressed, overweight divorcee. Their six-month old relationship had descended from obsession and abuse into a lurid vortex of murder, decapitation, and necrophilia. For several weeks, Clark, sometimes with Bundy beside him, drove his blue station wagon up and down the boulevard in search of prostitutes to slay. The crimes ended only when Bundy could take it no more.

The couple's backgrounds could scarcely have been more dissimilar. Born in Pennsylvania in 1948, to a Navy family, Clark spent his childhood traveling around the world. Expelled from his military academy and later abruptly discharged from the Air Force, he held several jobs...