Table of Contents
- Decades of Belief
- Damning Evidence
- Lost Tapes
- Stage-Managed Confession
- Multiple Killers
- Final Thoughts
For decades, Albert DeSalvo was regarded as the monstrous ‘American Jack the Ripper’ who assaulted and murdered over a dozen women, ranging in age from 19 to 85.
However, the nephew of the presumed last and youngest victim has now presented compelling evidence that he believes proves the police apprehended the wrong individual.
The Boston Strangler killed 13 women (upper L to lower R): Rachel Lazarus, Helen E. Blake, Ida Irga, Mrs. J. Delaney, Patricia Bissette, Daniela M. Saunders, Mary A. Sullivan, Mrs. Israel GoldbergCredit: Getty
Margaret Cadigan, Sophie Clark, Anna E. Slessers, Jane Sullivan, and Cheryl Laird (upper L to lower R):Credit: Getty
The Boston Strangler’s crimes were attributed to Albert DeSalvo based on his confessionCredit: Getty
Casey Sherman’s 19-year-old aunt, Mary Anne Sullivan, was murdered by the Boston StranglerCredit: Alamy
Journalist Casey Sherman, 56, has researched this notorious case—which has been adapted into a 2023 feature film—over decades and is now revealing new evidence that he believes will “blow the case wide open.”
He has discovered DeSalvo’s long-lost ‘confession tapes’, in which the sexual predator and robber appears to be coached, corrected, and even shown photographs of crime scenes while making admissions.
Furthermore, Casey has identified another individual whom he suspects actually murdered his aunt, Mary Anne Sullivan, who was just 19 years old. This suspect reportedly failed a lie detector test, provided a false alibi, and was a partial DNA match to evidence found on the victim's body.
The revelations left him feeling “sick to my stomach,” as he believes it was a case of “making a suspect fit the crime” with DeSalvo, who was mysteriously stabbed to death just two weeks before he promised to “drop a bomb” and “clear my name.”
Casey spoke exclusively to The Sun ahead of the release of his documentary, The Boston Strangler: Unheard Confession, which airs next weekend in the US.
“These are groundbreaking discoveries, and I hope the police will do the right thing and resolve the case once and for all,” he states.
“There has never been closure for any of the victims’ families in this matter, including my own.
“Murder has a ripple effect that spans generations; even though it occurred in the 1960s, the impact is still felt by our families in 2025.”
Casey has dedicated nearly 40 years to investigating his aunt’s death and the Boston Strangler case, making significant strides toward uncovering the truth.
His efforts led to the exhumation of both his aunt Mary for a re-autopsy and to extract seminal fluid that miraculously remained, and DeSalvo’s remains to check for a DNA match.
During this process, Casey was able to hold the supposed Strangler’s skull in his hands, describing it as a “really surreal experience” and “Shakespearean.”
However, his latest findings, which he refers to as “the holy grail in the Boston Strangler case,” are the interrogation tapes that were reportedly lost for decades.
Stolen Interrogation Tapes
Albert DeSalvo surrounded by police after his capture in Lynn, Massachusetts on February 25, 1967Credit: AP
