Prime Video 2026 1 season 4 eps NC16 Ended

Killing Grounds: The Gilgo Beach Murders

2026 1 season 4 eps NC16

6.9

6.7

Season 1

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Season 1

All episodes

47 min

S1 · E1 · Apr 21, 2026

Part One Episode 1

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.

7.4 · You

38 min

S1 · E2 · Apr 21, 2026

Part Two Episode 2

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.

7.5 · You

42 min

S1 · E3 · Apr 21, 2026

Part Three Episode 3

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.

7.3 · You

45 min

S1 · E4 · Apr 21, 2026

Part Four Episode 4

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.

7.8 · You

4 episodes in Season 1

Some details come from TheTVDB.

Killing Grounds: The Gilgo Beach Murders