Season 4

In November 2010, Michigan police rushed to the scene of a home invasion. They find two victims of a stabbing, and one is pronounced dead. After finding a map labeled "My House" outside an open window, detectives unravel a shocking plot of betrayal.

A week before Christmas a warehouse foreman is discovered murdered execution style in his van. In the hunt for his killer, police uncover a deadly pact and a hit list targeting ex-flames, both real and imagined.

After months of arguing, tensions between two families come to a head when a fight ends in a fatal stabbing. Investigators must dissect conflicting accounts to figure out if the stabbing was in self-defense or a purposeful attack.

In November 2018, police in Maitland, FL, are called to a grizzly scene. They find a body in a bag and a distraught young man hiding in a bathroom claiming he is not the killer. Investigators immediately launch a manhunt to find the perpetrator.

A sudden home invasion leaves a single mother dead, two children orphaned, and another man clinging to life. The search for her killer uncovers a deadly obsession and the remorseless rage of a spurned lover who lives for violence.

When a woman calls 911 saying she shot an assailant who broke into her home, police must investigate multiple murders to find out what really happened. But the truth won't come until years later when a chance encounter unravels the case.

Chicago police rush to a scene where a young man is reportedly foaming at the mouth. As witnesses try to save him, he hands them a flip phone - could it belong to his attacker? Investigators dive into his personal life and uncover a toxic romance.

Police in Guthrie, OK, find a beloved local entrepreneur brutally murdered in his home. The search for his killer uncovers a tragically lethal conspiracy of greed and murder fueled by loneliness, self-deception, and lies.

When the body of a young mother is found on the side of the interstate, investigators race to find out who she is and what happened to her.

When calls flood Philadelphia's dispatch about a car striking a building, police find a chaotic scene as a wife cradles her deceased husband and witnesses shout "She hit him!". She claims it was an accident, but a brutal video reveals the truth.

When a young couple is found murdered in their own home, no one knows why. Friends and family offer no obvious enemies, but the police have a different story. Accusations fly and send a group of siblings down a dark and irreversible path of payback.

When a routine welfare check fails to find a young mother, police race to find out what happened to the missing woman. As they look into witness reports and phone records, they find the mother was the target of a brutal pursuit of payback.

Ohio police rush to North Toledo after reports of gunshots; first responders find teenager Carter Coley unresponsive with multiple gunshot wounds. Upon questioning his friends, detectives wonder if a fight that night may have been setup for revenge.