An Unexpected Killer

Plus, catch the premiere of new limited series, "Lovers' Lane Murders," which explores a string of murders along the Colonial Parkway in Virginia.

Veronica Bozza was in the middle of a contentious divorce battle with her husband, Timothy Bozza, when she was killed in her own Tennessee home.

Some of the most notorious killers have been called psychopaths — but others may be hiding in plain sight. 

In Oxygen's series "An Unexpected Killer," the culprit is a shock for detectives — and viewers.

"Monster Preacher," "Framed By The Killer," "A Deadly Mistake," "Florida Man Murders," and more are coming to Oxygen in January for Nine Nights Of Twisted Killers. Here's how to watch.

"Monster Preacher," "Framed By The Killer," "A Deadly Mistake," and Season 2 of "An Unexpected Killer" are also coming to Oxygen in January for Nine Nights Of Twisted Killers.

Jon Schmeyer would complain about giving his ex-wife alimony in cash payments, and Timothy Jacoby began to hatch a robbery plot that turned deadly.

Parents Dixie and Lloyd Ortiz and their son, Steven Ortiz, were axed to death at their home during a botched robbery. 

Missy Grubaugh was bludgeoned and fatally stabbed in the chest before her Arlington apartment was set on fire.

John Baillio told Louisiana detectives that he, his stepfather, Phillip Skipper, and two others shot, stabbed and bludgeoned their neighbor Genore Guillory to death as part of Baillio’s initiation into “The Brotherhood.”