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| Mitchell Gaff pleaded guilty to the rapes and cold case murders of Judith Weaver and Susan Vesey in Everett, Wash., according to the Everett Police Department. |
A shocking cold case breakthrough in Washington state has drawn national attention after investigators reportedly used discarded chewing gum to obtain DNA that linked a longtime sexual predator to multiple decades-old murders. The suspect, Mitchell Gaff, has now pleaded guilty in connection with two brutal killings that haunted investigators for years.
How Detectives Used Chewing Gum to Crack the Case
According to reports, detectives from the Everett Police Department approached Gaff at his Olympia home pretending to be researchers in the gum industry. They offered him free samples, and after he discarded the gum into cups, investigators collected the DNA and compared it to evidence from unsolved crime scenes. That DNA reportedly matched both murder cases.
The creative investigative tactic has been praised as a major example of how modern forensic science can solve crimes long considered unsolvable.
The Murders He Admitted To
Mitchell Gaff, 68, pleaded guilty in Snohomish County Superior Court to the rapes and murders of Judith “Judy” Weaver and Susan Vesey. Weaver was found dead in her home after a fire in June 1984, while Vesey was discovered murdered in her home in July 1980, one day after her 21st birthday.
These cases remained unresolved for decades before the recent DNA breakthrough.
A History of Violence
Reports indicate Gaff had a long history of violent sexual crimes in Washington. He was previously convicted in separate attacks involving women and teenage girls during the 1970s and 1980s. Investigators and media accounts described years of terror inflicted on victims throughout the region.
The case has reignited discussion about how repeat violent offenders were able to evade justice for so long.
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| Susan Vesey was murdered inside her home in Everett, Wash., on July 12, 1980, according to authorities. |
Why This Case Matters
This story highlights two major developments in criminal justice:
1. Advances in DNA Technology
Old evidence can now be reexamined with tools unavailable decades ago.
2. Persistence in Cold Cases
Detectives continue to revisit old cases, often bringing closure to families years later.
3. Innovative Police Work
The undercover chewing gum operation demonstrates how investigators sometimes use unconventional but legal tactics to gather evidence.
Sentencing Update
Gaff is scheduled to be sentenced on May 13. Families of the victims are expected to finally see justice after waiting more than four decades.
What once appeared to be forgotten cold cases ended with one small piece of chewing gum. Through persistence, science, and investigative strategy, authorities were able to connect a suspected predator to crimes that devastated families for generations.
This case serves as another reminder that time does not always erase evidence—and justice can still arrive


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