Mary & Bill: An Ohio Cold Case Go to Mary & Bill: An Ohio Cold Case

The Unsolved Case of the Murder of Two Students

In 1970, Mary and Bill, two university students in love, were brutally murdered in a Columbus, Ohio The case has never been solved. To understand why, Host/Producer Justin Glanville and the sisters of the victims track down friends, witnesses and the Columbus police. They also explore what it takes to bring new attention to a 50-year-old cold case.

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6. Behind the “Blue Wall” (Sort Of)

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Columbus Police agree to speak with Mary's identical twin sister, Martha Petry, and reveal they are waiting to submit DNA evidence for forensic genealogy analysis. First, they're working to rule out two other suspects. James Renner, a true crime author and founder of the nonprofit Porchlight Project, says a window for solving the case may be closing as forensic genealogy becomes increasingly regulated.

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7. The Time to Live

Mary & Bill: An Ohio Cold Case | S:1 E:7
The approvals process for submitting DNA evidence proves time-consuming, as Columbus Police ready samples for “familial searches” of offender data...
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A Crime of Passion?

Mary & Bill: An Ohio Cold Case | S:1 E:4
Police and family members have long speculated that whoever killed Mary Petry and Bill Sproat may have known them. But Mary and Bill had no appare...
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And She Was Gone

Mary & Bill: An Ohio Cold Case | S:1 E:5
A woman who shared a ride to Columbus with Mary recalls Mary was adamant about waiting for Bill to pick her up from a hotel lobby, which Mary's br...
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A Dimly-Lit Welcome

Mary & Bill: An Ohio Cold Case | S:1 E:3
The Columbus police make a surprise visit to Cleveland, and one of the surviving reporters who covered the murders of Mary Petry and Bill Sproat i...
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