A new father is found dead on the side of a road. Then the stabbing of a young woman leads police on a high speed chase. Could these two chilling murders be connected? Josh Mankiewicz reports.

After a 2011 Halloween party at a country club in Dyersburg, Tennessee, Karen Swift, a wife and mother of four, vanishes. Nearly a decade later, a private investigator claims to uncover chilling new clues that turn the town upside down.

On Friday the 13th, 25-year-old Chantay Blankinship doesn't come home from her usual walk around the neighborhood. Two days later, searchers make a gruesome discovery at an abandoned farmhouse that locals call the Haunted House. When all leads dry up, investigators turn to a unique forensic DNA tool, which sparks a shocking confession during a church service.

In 2013, Desiree Sunford is found murdered in her Yakima, Washington, home. The case, which begins with what seems to be a simple burglary, spirals into a complex investigation exposing a tangled web of betrayal, deception, and fatal obsession.

Mike Sisco and his fiancé Karen Harkness are found shot to death in their Topeka duplex in 2002. A years-long search for the killer and three criminal trials over two decades reveals strained dynamics within one victim’s family.

In the early morning hours of November 13, 2022, four University of Idaho students were killed in an off-campus rental house on King Road in Moscow, Idaho. See never-before-reported evidence, including video, photographic, and digital materials that investigators say track accused killer Bryan Kohberger’s movements.