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  • Oxygen

An Unexpected Killer

  • 2019 – 2022
  • Returning Series
  • Documentary · Crime
  • ~45m / ep
  • 3 seasons
  • 8.2/10

A wild and unpredictable journey into homicide investigations where the true identity of the killer comes as a shocking surprise. Combining unparalleled access, captivating interviews and stylish reenactments, each investigation starts in a familiar way - examining the crime scene, interviewing potential suspects… but then something unexpected changes everything. A new witness, an overlooked piece of evidence or even an innovation in forensic science sends investigators on a totally unexpected path that ultimately leads to the conviction of the real killer.

Latest: Season 3 · 2022

View all seasons
  1. E1. A Predator Within

    Mar 4, 2022 · 45m

    When an athletic and popular college student is violently murdered in her apartment, police track down several surprising suspects, including one with a disturbing obsession, before crucial evidence unmasks a dangerous predator no one saw coming.

  2. E2. Gold-Blooded Murder

    Mar 11, 2022 · 45m

    A fun-loving 59-year-old man is found shot to death in his home and his beloved jewelry collection has been stolen, leading detectives to a long list of suspects and a killer harboring a dark secret.

  3. E3. Fatal Fast Food

    Mar 18, 2022 · 45m

    A restaurant is robbed and the night manager murdered leading police to investigate suspicious coworkers, a disgruntled ex-employee and a violent serial attacker. The case goes cold, but explosive new evidence leads to a killer nobody suspected.

  4. E4. A Love Lost

    Mar 25, 2022 · 45m

    When a young husband-to-be is found shot and stabbed, detectives investigate a secret affair, a kidnapping plot and a terrifying racist gang before unveiling a killer whose hidden criminal life leaves everyone stunned.

  5. E5. Nightmare in Shenandoah

    Apr 1, 2022 · 45m

    A devoted mother is stabbed to death in a horrifying attack and suspicion falls on those closest to her, but while a cryptic note and a violent crime spree baffle detectives at first, they eventually track down a deranged killer no one predicted.

  6. E6. Deadly Desires

    Apr 8, 2022 · 45m

    A vibrant young mother of three is murdered in the safety of her own home and investigators look to a history of troubled romances, but when the case goes cold and police can't find the killer, a phone call leads to a culprit hiding in plain sight.

+14 more episodes — open all seasons to browse every episode.