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An Unexpected Killer takes a deep dive into homicide investigations through captivating interviews with potential suspects, in-depth examinations of the crime scene and re-enactments. Viewers follow experienced homicide investigators who believe they are inches away from solving the case, until they come across something unanticipated. Whether it's a new witness, an overlooked piece of evidence or even an innovation in forensic science, in each case detectives find a startling discovery that sends the investigation in a completely new direction in their search for justice.

An Unexpected Killer is a Crime, Reality series that is currently running and has 1 seasons (8 episodes). The series first aired on December 5, 2019.

An Unexpected Killer is available for streaming on the Oxygen website, both individual episodes and full seasons. You can also watch An Unexpected Killer on demand at Amazon, Hulu, NBC, Vudu, Oxygen, FuboTV, Google Play, iTunes online.

Thursday 8:00 PM et/pt on Oxygen
1 Season, 8 Episodes
December 5, 2019
Crime, Reality
Cast: Natasha Fiorino, Mac Summers
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An Unexpected Killer Full Episode Guide

  • A loving father and beloved basketball coach is ruthlessly murdered in Tennessee, and police decode a confusing array of evidence to unveil a killer who is shockingly close to home.

  • Detectives follow a trail of evidence found through a mother's relationships to identify who killed her.

  • A beloved couple and their special needs son are savagely murdered in rural New Mexico, leading detectives to uncover long buried secrets in a tight-knit town.

  • Police untangle a web of relationships to find a killer who's dangerously close to home after a young college student is viciously murdered and her apartment set ablaze.

  • Police in small-town Louisiana investigate the mysterious and brutal murder of a beloved neighbor with no known enemies.

  • When a suburban mom is murdered in her own home, investigators chase down an elusive killer that no one saw coming.

  • When a popular college student is found slain in the middle of campus, police suspect his friends and lovers might be involved.

  • A selfless couple, Robert and Kathryn Swartz, were found brutally murdered on the first snowy morning of January 1984. As investigators arrived at the scene of the crime, they struggled to find the true motive on why this religious couple who were deeply devoted to their family and charitable causes were killed. But as they dug deeper into the case, investigators uncovered dark family secrets ultimately leading them to a suspect no one saw coming.