Wednesday

For three weeks in May of 1994, a brutal killer had a nation on edge. A bloody spree of rapes, kidnappings, and murders resulted in the deaths of six Oklahoma residents, including a local radio personality and an elderly widower. Gary Alan Walker, an emotionally disturbed ex-convict, was eventually captured and executed for these crimes.

In 2004, a former marine goes missing from his North Carolina home. Investigators sift through a mountain of tips and small-town rumors before a surprise witness comes forward who may hold the key to the mysterious disappearance.