Season 5 - Episode Guide

High school freshman Tina Faelz ditches detention and heads for home - but someone murders her along the way; suspects are plentiful, including a known sex offender, but decades pass before two determined detectives finally deliver justice. 

The key to solving the toughest murders lies somewhere in the final 24 hours of a victim's life. Determined investigators must piece together events to reconstruct the timeline, unlock the motive, and ultimately close in on the killer.

The key to solving the toughest murders lies somewhere in the final 24 hours of a victim's life. Determined investigators must piece together events to reconstruct the timeline, unlock the motive, and ultimately close in on the killer.

A diligent art student lies stabbed to death in bed. The ferociousness of the crime makes little sense considering the quiet co-ed has no known enemies. However, police soon meet someone whose secret hatred for her reveals itself as a night of pure horror.

Early one May morning in 2012, a Kentucky pharmaceutical company employee stumbles upon the bound body of a close colleague.

In affluent Colleyville, Texas, a bloody home invasion leaves the housekeeper dead; police soon discover she was the intended target all along; little did the sweet grandmother know just how many people were impatiently waiting for her to die.

A Tennessee college student returns to campus to find her friend and roommate Heather Maples viciously strangled in her bed; the outgoing girl had many friends, but police fear that on August 7, 2015, one of friends turned out to be her worst enemy.

The beating death of a 15-year-old girl in Draper, Utah, outrages her parents, who had adopted her five years prior; one witness implicates a local drug dealer and another a mysterious gang member, but it seems almost everyone is lying.

A loving couple vanishes from their Chehalis, Washington, home just days before Christmas. Police discover them shot to death on an old logging road, shocking the community. With few solid leads, the case remains cold until a new cop takes a second look.

A single mother's murder moves police officers to tears at the crime scene.

Texarkana neighbours discover Patti Wheelington shot dead on her front porch; while the charismatic widow has many admirers from her beloved square dancing club, police find out who harboured enough hate to end her dancing days forever.