When a distinguished Navy doctor and his wife are found stabbed, police launch a hunt for a brutal killer. As detectives dig into the lives of the couple they discover a twisted relationship of secrets, jealousy, adultery and murder.

In 2011, a lone gunman kills six and wounds 13 in an Arizona shopping centre. Police capture a disturbed, 22-year-old suspect with a bizarre history of behaviour that should have been a warning sign of the massacre.

When a beloved grandfather goes missing in rural Utah, investigators begin a multi-state search. What starts as a simple missing person's case becomes a complex crime of betrayal and murder by a father and son criminal duo.

A high school girl goes missing without a trace. When her body is found, the entire community of Mansfield, Texas is in shock. Rumours buzz around the high school that a killer is walking the halls. But who?

Houston, Texas is rocked by a grisly crime scene— a man whose head is practically hammered off his body and a semi-nude woman riddled with pickaxe wounds. Police uncover an unlikely suspect.

A Wendy’s restaurant in Queens, New York is hit by a pair of robbers just before closing time. The robbery escalates as the pair slaughter five employees, while leaving another two for dead.