When an off-duty police officer in San Francisco happens upon a minor theft at a lumberyard one Sunday afternoon, he unwittingly jumpstarts an investigation into one of California's deadliest, most depraved serial killers: Leonard Lake and Charles Ng.

In the fall of 1994, an elementary school principal is found tied to a tree outside Oklahoma City, launching a nationwide manhunt for Franklin Delano Floyd, and exposing a staggering, decades-long reign of terror and abuse.

In El Dorado County, CA, firefighters combatting a raging fire discover a burnt out SUV with the charred remains of a beloved local man reported missing just hours earlier, igniting an investigation into a sinister scheme, and exposing a deadly affair.

After a wild Christmas party, Ed Amos wakes to find his wife Bobbe dead from an apparent cocaine overdose. When her toxicology report suggests foul play, detectives dig into their pasts to uncover greed, secret love affairs, and suspicious deaths.

A park ranger in Texas pulls over a suspicious truck filled with marijuana. The passenger flees deep into the desert, unleashing a manhunt that will unearth something far more sinister--and bizarre--than detectives could ever have imagined.

Air Force veteran Michael Giles, disappears from the quiet suburb of Garland, TX. Investigators work through the jigsaw puzzle of a case, discovering mistaken identity, fraud and murder.