Part Three - Cast

Cast	+ Add Cast
48 cast members

Name	Known for
Taylor Self - Survived Meeting Rex Heuermann Self - Survived Meeting Rex Heuermann See fewer	Gone Girls: The Long Island Serial Killer (2025)
Robert Kolker Self - Author, Lost Girls: An Unsolved American Mystery Self - Author, Lost Girls: An Unsolved American Mystery See fewer	Bad Education (2019)
Geraldine Hart Self - Suffolk County Police Commissioner 2018 - 2021 Self - Suffolk County Police Commissioner 2018 - 2021 See fewer	Inside (2007)
Raymond Tierney Self - Suffolk County District Attorney 2022 - present (as Ray Tierney) Self - Suffolk County District Attorney 2022 - present (as Ray Tierney) See fewer	Gone Girls: The Long Island Serial Killer (2025)
Jaclyn Gallucci Self - Journalist, Long Island Press Self - Journalist, Long Island Press See fewer	Gone Girls: The Long Island Serial Killer (2025)
Bear Brodsky Self - Friend of Amber Costello Self - Friend of Amber Costello See fewer	Gone Girls: The Long Island Serial Killer (2025)
Dave Schaller Self - Friend of Amber Costello Self - Friend of Amber Costello See fewer	Monster: Hunting the Long Island Serial Killer (2025)
Elizabeth Meserve Self - Aunt of Megan Waterman Self - Aunt of Megan Waterman See fewer	Gone Girls: The Long Island Serial Killer (2025)
Amanda Funderburg Self - Sister of Melissa Barthelemy Self - Sister of Melissa Barthelemy See fewer	Monster: Hunting the Long Island Serial Killer (2025)
Melissa Cann Self - Sister of Maureen Brainard-Barnes Self - Sister of Maureen Brainard-Barnes See fewer	The Killing Season (2016)
Etienne De Villiers Self - Neighbor of Rex Heuermann Self - Neighbor of Rex Heuermann See fewer	Gone Girls: The Long Island Serial Killer (2025)
Muriel Henriquez Self - Former Co-Worker of Rex Heuermann, Self - Former Co-Worker of Rex Heuermann, See fewer	Gone Girls: The Long Island Serial Killer (2025)
Margaret Self - Wife of Rex Heuermann's Cousin Self - Wife of Rex Heuermann's Cousin See fewer	Gone Girls: The Long Island Serial Killer (2025)
John Parisi Self - Childhood Friend of Rex Heuermann Self - Childhood Friend of Rex Heuermann See fewer	Monster: Hunting the Long Island Serial Killer (2025)
Sara Karnes Self - Friend of Maureen Brainard-Barnes Self - Friend of Maureen Brainard-Barnes See fewer	Gone Girls: The Long Island Serial Killer (2025)
Lisa Marcoccia Self - Suffolk County Legal Aid Society Self - Suffolk County Legal Aid Society See fewer	Gone Girls: The Long Island Serial Killer (2025)
Liliana Waterman Self - Daughter of Megan Waterman Self - Daughter of Megan Waterman See fewer	Gone Girls: The Long Island Serial Killer (2025)
John Ray Self - Attorney for Mari Gilbert Self - Attorney for Mari Gilbert See fewer	The Gilgo Beach Killer: House of Secrets (2025)
Rex Heuermann Self - Long Island Serial Killer (archive footage) Self - Long Island Serial Killer (archive footage) See fewer	L'Interview by Antoine (2021)
Melissa Barthelemy Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
Maureen Brainard-Barnes Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
Amber Costello Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
Sandra Costilla Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
Shannan Gilbert Self - Murder Victim (archive footage) (voice) Self - Murder Victim (archive footage) (voice) See fewer
Valerie Mack Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
Jessica Taylor Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
Lorraine Ela Self - Mother of Megan Waterman (archive footage) Self - Mother of Megan Waterman (archive footage) See fewer	Crime Watch Daily (2015)
Mari Gilbert Self - Mother of Shannan Gilbert (archive footage) Self - Mother of Shannan Gilbert (archive footage) See fewer	Crime Watch Daily (2015)
Nicolette Brainard-Barnes Self - Daughter of Maureen Brainard-Barnes (archive footage) Self - Daughter of Maureen Brainard-Barnes (archive footage) See fewer
Asa Ellerup Self - Wife of Rex Heuermann (archive footage) Self - Wife of Rex Heuermann (archive footage) See fewer	The Gilgo Beach Killer: House of Secrets (2025)
Victoria Heuermann Self - Daughter of Rex Heuermann (archive footage) Self - Daughter of Rex Heuermann (archive footage) See fewer	The Gilgo Beach Killer: House of Secrets (2025)
Christopher Sheridan Self - Rex Heuermann's Stepson (archive footage) Self - Rex Heuermann's Stepson (archive footage) See fewer	The Gilgo Beach Killer: House of Secrets (2025)
Theodore Heuermann Self - Father of Rex Heuermann (archive footage) Self - Father of Rex Heuermann (archive footage) See fewer
Megan Waterman Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
John Bittrolff Self - Convicted Killer (archive footage) Self - Convicted Killer (archive footage) See fewer	PIX 11 Morning News (2000)
Colleen McNamee Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
Rita Tangredi Self - Murder Victim (archive footage) Self - Murder Victim (archive footage) See fewer
Antoine Amira Self - L'interview by Antoine (archive footage) Self - L'interview by Antoine (archive footage) See fewer	The Gilgo Beach Killer: House of Secrets (2025)
Rodney Harrison Self - Suffolk County Police Commissioner (archive footage) Self - Suffolk County Police Commissioner (archive footage) See fewer	20/20 (1978)
Robert Macedonio Self - Attorney for Asa Ellerup (archive footage) Self - Attorney for Asa Ellerup (archive footage) See fewer	The Gilgo Beach Killer: House of Secrets (2025)
Thomas Spota Self - Suffolk County District Attorney (archive footage) (as Thomas J. Spota) Self - Suffolk County District Attorney (archive footage) (as Thomas J. Spota) See fewer	The Killing Season (2016)
Errol Toulon Self - Suffolk County Sheriff (archive footage) Self - Suffolk County Sheriff (archive footage) See fewer	Fox and Friends (1998)
Celia Tedde Sara Sara See fewer	The Survivor Chronicles
Jesi Abney Nikki (uncredited) Nikki (uncredited) See fewer	Gone Girls: The Long Island Serial Killer (2025)
Anthony Altieri Detective (uncredited) Detective (uncredited) See fewer	American Trial: The Eric Garner Story (2019)
Aaron Peck Detective (uncredited) Detective (uncredited) See fewer	Gone Girls: The Long Island Serial Killer (2025)
Nate Terani Rex (uncredited) Rex (uncredited) See fewer	Dungarees
Isabella Victorson Maureen (uncredited) Maureen (uncredited) See fewer	Glass Houses (V)