Season 1

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  7.2/10114 votes

  Part 1 One

  Season 1 Episode 1 - Aired 7/11/2025

  The idyllic University of Idaho Campus in the small college town of Moscow, Idaho is shattered when four popular college students are founded murdered. Shock turns to fear when the police reveal there is no suspected killer in custody.

  Director: Liz Garbus, Matthew Galkin

  Writer: Unknown

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  7.4/10102 votes

  Part Two

  Season 1 Episode 2 - Aired 7/11/2025

  The police department's refusal to give information isn't helping quell the rising tide of terror. Sleuths on social media fuel speculation and rumors. When the police finally speak, horrifying details are released.

  Director: Liz Garbus, Matthew Galkin

  Writer: Unknown

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  7.4/1094 votes

  Part Three

  Season 1 Episode 3 - Aired 7/11/2025

  In a shocking turn of events, seven weeks after the murders, a suspected is arrested. A complete stranger to the victims' friends and families. The arrest sends shockwaves through the community, as more and more questions arise.

  Director: Liz Garbus, Matthew Galkin

  Writer: Unknown

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  7.1/1090 votes

  Part Four

  Season 1 Episode 4 - Aired 7/11/2025

  A detailed account of what happened the night of the murders is revealed, including details from the eyewitness. The biggest remaining question is, who was the killer's target, and why? Potential motive emerges as the delayed trial looms.

  Director: Liz Garbus, Matthew Galkin

  Writer: Unknown