Developing·Case the developing record
#DC-0035

Rex Heuermann

Case involving his guilty plea and sentencing in the Gilgo Beach killings.

Active · still building data
last updated 15 July 2026 · 5 sources
Confirmed facts
10
Open questions
3
Plea date
8 Apr 2026
Sentence date
17 Jun 2026
Sentence
LWOP
This case is still developing. Get an email when the file updates.
Audio brief · automated narration of the sourced record
Transcript

Case file Rex Heuermann, reference D C zero zero three five. According to the AP timeline, investigators arrested Rex Heuermann on July thirteenth, twenty twenty-three, and charged him with murder in the deaths of Amber Lynn Costello, Megan Waterman and Melissa Barthelemy; those charges were allegations when filed. The AP timeline reported later charges involving Maureen Brainard-Barnes, Sandra Costilla, Jessica Taylor and Valerie Mack; those charges were also allegations when filed. AP reported that on April eighth, twenty twenty-six, Heuermann pleaded guilty to seven counts of murder involving Melissa Barthelemy, Maureen Brainard-Barnes, Amber Lynn Costello, Sandra Costilla, Valerie Mack, Jessica Taylor and Megan Waterman. AP also reported he acknowledged in court that he killed Karen Vergata, while AP reported he had not been charged in her death. AP reported that on June seventeenth, twenty twenty-six, Heuermann was sentenced in Riverhead, New York, to life in prison without parole. The file’s open questions include whether authorities will release findings from his reported FBI cooperation, whether additional case links will be announced, and which state prison is currently holding him. This has been an automated reading of case file D C zero zero three five at developing case dot com. Every fact you heard names a public source.

Timeline of what's confirmed10 entries
13 July 2023
AP's timeline reported that investigators arrested Rex Heuermann and charged him with murder in the deaths of Amber Lynn Costello, Megan Waterman and Melissa Barthelemy; those charges were allegations at the time they were filed.
AP timeline
16 January 2024
AP's timeline reported that Heuermann was charged in the death of Maureen Brainard-Barnes; that charge was an allegation at the time it was filed.
AP timeline
6 June 2024
AP's timeline reported that Heuermann was charged with murder in the deaths of Sandra Costilla and Jessica Taylor; those charges were allegations at the time they were filed.
AP timeline
17 December 2024
AP's timeline reported that an indictment was unsealed charging Heuermann in the death of Valerie Mack; that charge was an allegation at the time it was filed.
AP timeline
8 April 2026
AP reported that Heuermann pleaded guilty to seven counts of murder involving Melissa Barthelemy, Maureen Brainard-Barnes, Amber Lynn Costello, Sandra Costilla, Valerie Mack, Jessica Taylor and Megan Waterman.
AP
8 April 2026
AP reported that Heuermann acknowledged in court that he killed Karen Vergata, while AP also reported he had not been charged in her death.
AP
8 April 2026
AP reported that Heuermann pleaded guilty to three counts of first-degree murder and four counts of intentional murder.
AP takeaways
17 June 2026
AP reported that Heuermann was sentenced in Riverhead, New York, to life in prison without the possibility of parole.
AP
17 June 2026
AP reported that Heuermann agreed as part of his guilty plea to cooperate with the FBI's behavioral analysis unit.
AP
18 June 2026
CBS News New York reported that Heuermann left Long Island after sentencing and was transferred to a state prison.
CBS News New York
Open questionsunconfirmed · not conclusions
Will authorities publicly release additional findings from Heuermann's reported cooperation with the FBI behavioral analysis unit?unconfirmed; AP reported the cooperation agreement, but no further public findings were verified in the trusted results reviewed · unconfirmed
Will authorities announce any additional case links or rule-outs involving Heuermann after sentencing?unconfirmed; no trusted result reviewed confirmed further post-sentencing case links · unconfirmed
Which state prison is currently holding Heuermann?unconfirmed in trusted results reviewed; CBS News New York reported transfer to a state prison but did not identify the facility in the search result · unconfirmed
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