Murder in the 21st Season 1: Episode Guide & Ratings

Police are hard pressed to find solid leads when a 19-year-old girl vanishes without a trace. After her body is found dead on an isolated road, a frenzy of theories and suspicion from national news and amateur web sleuths takes detectives down a web of confusion until the heartbreaking truth is revealed.

When a 19-year-old struggling to make it on her own goes missing, her family kicks into high gear to find her; as precious time runs out and the hope of bringing her home alive grows dim, two unlikely people team up to confront a dangerous predator.

The peaceful town of Mountain City, TN is rocked when a beloved young couple is found brutally murdered in their home. As police search for their killer, they uncover a family enmeshed in sinister secrets and lies.

A brutal attack on two employees of a high-end shop leaves one woman dead and another scarred by the memory of the events she survived. As detectives make sense of the horrific tale, bizarre clues bring them to a shocking truth.

A horrific quadruple homicide goes unsolved for over a decade. While one investigation goes cold, another heats up as the search for a missing couple holds the key to unravelling the secrets of a serial killer.

The Community of Macon, GA., is gripped in a wave of terror when a beautiful law student disappears from her apartment complex; the shocking discovery of a body leads investigators uncomfortably close to home.

A jilted lover takes to the internet to stalk her ex and threaten his girlfriend; when she finally follows through on her violent threats, detectives find themselves entangled in a deadly web of deception.

A sudden illness takes hold of a beloved doctor, leaving her family helpless as the illness takes a fatal turn; the investigation into her death takes her family on a journey into the dark heart of a monster who has been at their side all along.

A young, pregnant woman is found dead of an apparent suicide in Saginaw, Mich., but her family and friends don't believe it; as police dig deep to get to the truth, they discover a shocking secret they never saw coming.

A vibrant, social media savvy, 15-year-old girl goes missing in a small town, leaving the community perplexed to what happened. As her love ones search desperately to find her, a local teenage hangout spot might hold the clues to her ultimate doom.