Home / Crime and Justice / 40-Year Cold Case Solved: DNA Cracks Iowa Mall Murder
40-Year Cold Case Solved: DNA Cracks Iowa Mall Murder
21 Dec, 2025
Summary
- Michelle Martinko was found stabbed to death in her car outside a mall.
- New DNA evidence discovered in 2006 led to a breakthrough.
- Jerry Burns was arrested in 2018 and sentenced to life in prison.
Michelle Martinko, an 18-year-old from Iowa, was discovered murdered in her car on December 20, 1979, outside the Westdale Mall in Cedar Rapids. She had been brutally stabbed 29 times in an attack that left investigators suspecting a stranger. Despite having cash on her and no signs of sexual assault, the case remained unsolved for nearly four decades, leaving her family searching for answers.
The investigation received a significant breakthrough in 2006 when a detective located blood scrapings from the crime scene, which were finally sent for testing. The analysis revealed male DNA, but it took another decade to identify a suspect. Utilizing genetic genealogy, investigators compared the crime scene DNA to public ancestry databases, leading them to Jerry Burns, whose DNA was an exact match.
