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Killing Grounds: The Gilgo Beach Murders

When a woman vanishes, police find bodies along Long Island's shore. Years of dead ends and overlooked victims stall the case until a new task force spots a suspect hiding in plain sight. With trial looming, insiders and families speak.

IMDb 7.54 episodes2026HDU/A 16+

Documentary•Suspense•Unscripted

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S1 : E1 Killing Grounds: The Gilgo Beach Murders — Part One

S1 : E1

Killing Grounds: The Gilgo Beach Murders— Part One

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English

Episode Related Details

S1 E1 - Part One

Apr 22, 2026 • 47m•U/A 16+

While searching for a missing woman on Long Island, police uncover a hidden burial ground. As families demand answers, investigators begin to realize a serial killer may have been operating unnoticed for years.

Included with Prime

S1 E2 - Part Two

Apr 22, 2026 • 38m•U/A 16+

After years of stalled leads and system failures, a new task force reopens the Gilgo case, unearthing phone records, witness accounts, and vehicle clues that all point to a suspect who's been hiding in plain sight.

Included with Prime

S1 E3 - Part Three

Apr 22, 2026 • 42m•U/A 16+

A year of surveillance and clandestine DNA sampling leads to Rex Heuermann's arrest. As investigators dig deeper, other victims are connected as terrifying new evidence is revealed.

Included with Prime

S1 E4 - Part Four

Apr 22, 2026 • 44m•U/A 16+

A disturbing document recovered from Rex Heuermann's computer reveals what looks like a detailed murder plan. Investigators add victims and trace links far beyond Long Island. Ahead of the trial, a court ruling reveals the path forward for the case.

Included with Prime