Allison Guerriero, the former mistress of disgraced FBI spy Charles McGonigal, was found dead at her home in Boynton Beach, Florida, on the evening of August 27. Guerriero's affair with McGonigal, who once led the FBI's counterintelligence division in New York, was instrumental in exposing his crimes, including secretly working for Russian oligarch Oleg Deripaska. McGonigal is currently serving a six-year and six-month prison sentence.
While the cause of Guerriero's death remains unknown pending an autopsy, a spokesperson for the Boynton Beach Police Department stated that there did not appear to be any signs of foul play at this time. Police responded to her apartment around 8 p.m. on Thursday. Her father, Bill Guerriero, 80, expressed his devastation and indicated that he was awaiting the autopsy report to understand the circumstances of his daughter's death. He asserted that she would not have taken her own life, citing her strong Roman Catholic faith and her recent positive outlook.
In the hours leading up to her death, Guerriero was active on social media platform X, formerly Twitter. She posted numerous messages, including a video of herself walking and speaking about her experiences and demanding attention be placed on other federal agents. In one post, she declared, "I hate the FBI." These posts were part of a years-long campaign she waged, often online, against McGonigal and other senior figures within the agency. Guerriero believed McGonigal received too lenient a sentence, telling the Daily Mail in 2024, "He's a traitor."
Roger Stone, a conservative lobbyist and ally of former President Trump, described Guerriero as a close friend. He last communicated with her via text on the day she died, describing her spirits as "excellent" and noting she was assisting him with research. Stone characterized Guerriero as a "brilliant researcher and writer" with extensive knowledge of law enforcement and intelligence capabilities. He also dismissed the possibility of suicide, stating, "There's no doubt that she would never take her own life." He recalled her as an optimist who overcame significant adversity, including battles with cancer and severe injuries from a past fire.
Ken Kurson, a journalist and political consultant who was pardoned by President Trump, remembered Guerriero as a unique individual, describing her as "loyal, chaotic, irreplaceable, occasionally even brilliant." He noted her intense devotion to her family and friends.
Guerriero, 52, moved to Florida three years ago. She first met McGonigal in the spring of 2017 while volunteering for a charity event. Their relationship, which lasted 18 months, involved McGonigal allegedly deceiving Guerriero about his marital status. She later revealed details of their affair, including McGonigal introducing her as his girlfriend within the FBI's Manhattan office and traveling with him, sometimes to meet individuals like Deripaska. Guerriero's suspicions grew after discovering a bag containing $80,000 in cash, which McGonigal claimed was from gambling winnings. The relationship ended on Christmas Eve in 2018 when McGonigal confirmed he was not divorcing his wife. In 2019, Guerriero began reporting her suspicions about McGonigal's activities to the FBI, though she felt her concerns were initially dismissed. McGonigal was arrested in January 2023.