SeriesEnded
Killing Grounds: The Gilgo Beach Murders (2026)
1 season4 episodes43 min per episode
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.
- First aired
- April 21, 2026
- Last episode
- April 21, 2026
- Network
- Prime Video
- Country of origin
- United Kingdom, United States
Seasons
Where to watch
Subscription
Amazon Prime Video
Amazon Prime Video with Ads
Trailer
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Cast
- Kristin Thorne as Self - Investigative Reporter
- Adrienne Corson as Self - Former FBI Intelligence Officer
- Lynn Barthelemy as Self - Mother of Melissa Barthelemy
- Dave Schaller as Self - Former Roommate and Friend of Amber Costello
- Ray Tierney as Self - District Attorney - Suffolk County
- Sara Karnes as Self - Friend of Maureen Brainard-Barnes
- John Ray as Self - Criminal Lawyer
- John Ray as Self - Criminal Attorney
- Stephen Udice as Self - Troop L Commander - New York State Police
- Donna Sturman as Self - Former Secretary of Rex Heuermann
- Donna Sturman as Self - Former Secretary to Rex Heuermann
- Stevie Smith as Self - Sister of Shannan Gilbert