Mary & Bill: An Ohio Cold Case

In 1970, Mary Petry and Bill Sproat, two university students in love, were murdered in a Columbus, Ohio apartment. The crime was so brutal it drew comparisons to the Manson murders of the previous year. The case has never been solved. Host/Producer Justin Glanville and the sisters of the two victims track down friends, witnesses to the original investigation and the Columbus police to understand why the case remains unsolved, despite the existence of solid DNA evidence and the fact that police say they have a person of interest. Along the way, the three explore who really owns DNA collected at crime scenes – families or police? – and what it takes to bring new attention to a 53-year-old cold case in an era when police departments are struggling to attract new recruits.

Episodes

7. The Time to Live

September 6, 2023 • 47 mins

The approvals process for submitting DNA evidence proves time-consuming, as Columbus Police ready samples for “familial searches” of offender databases. A woman whose sister was murdered in the 1980s explains how forensic genealogy led to answers and reflects on the idea of closure. Martha Petry and Pat Sproat Loeliger reunite more than 50 years after the murder of their siblings and discuss their current thinking about the case’s ...

Listen

Watch

Mark as Played

6. Behind the “Blue Wall” (Sort Of)

August 30, 2023 • 35 mins

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.

Listen

Watch

Mark as Played

5. And She Was Gone

August 23, 2023 • 36 mins

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 brother finds puzzling. Podcast host Justin Glanville explores a possible connection between the crime and Mary's travels to France. Justin and Martha Petry struggle to make contact with the Columbus police.

Listen

Watch

Mark as Played

4. A Crime of Passion?

August 16, 2023 • 37 mins

Police and family members have long speculated that whoever killed Mary Petry and Bill Sproat may have known them. There were no signs of forced entry into the apartment, and the brutal nature of the killings indicates an emotional component. But Mary and Bill had no apparent enemies. An unexpected tip came in the mid-2000s, saying a religious figure in Mary's life wanted to punish her for considering pre-marital sex – a theory tha...

Listen

Watch

Mark as Played

3. A Dimly-Lit Welcome

August 9, 2023 • 39 mins

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 in 1970 shares details on the cold case. A forensic pathologist reviews the autopsy and coroner's reports to reveal possible discrepancies in the case.

Listen

Watch

Mark as Played

2. Everybody Isn’t Going to France

August 2, 2023 • 35 mins

A formal request is made to the Columbus Police Department for documents related to the murders of Mary Petry and Bill Sproat, inspiring an unexpected visit from detectives. Police reports begin to flesh out the timeline of the crime, and a tour of the Columbus apartment where the murders took place suggests how the murderer might have gained access. Bill’s sister Pat Sproat Loeliger shares her memories of Bill, including his love ...

Listen

Watch

Mark as Played

1. Their Deaths Still Haunt

July 26, 2023 • 39 mins

Growing up, I heard my parents talk about the grisly 1970 double homicide of their college friend Bill Sproat and Bill’s girlfriend, Mary Petry, near the The Ohio State University campus in Columbus. No arrests were ever made. The murders of Mary and Bill were so violent – reportedly involving a kitchen knife, wire hangers and a bowling ball – that they were compared to the Charles Manson cult killings of the previous year. Manson ...

Listen

Watch

Mark as Played

Trailer - Mary & Bill: An Ohio Cold Case

July 13, 2023 • 2 mins

In 1970, Mary and Bill, two university students in love, were murdered in a Columbus, Ohio apartment, in a crime so brutal it drew comparisons to the Manson murders of the previous year. The case has never been solved. Host/Producer Justin Glanville and the sisters of the two victims work together to track down friends, witnesses to the original investigation and the Columbus police to understand why the case remains unsolved –desp...

Listen

Watch

Mark as Played

Popular Podcasts

Stuff You Should Know

If you've ever wanted to know about champagne, satanism, the Stonewall Uprising, chaos theory, LSD, El Nino, true crime and Rosa Parks, then look no further. Josh and Chuck have you covered.

Dateline NBC

Current and classic episodes, featuring compelling true-crime mysteries, powerful documentaries and in-depth investigations. Follow now to get the latest episodes of Dateline NBC completely free, or subscribe to Dateline Premium for ad-free listening and exclusive bonus content: DatelinePremium.com

Betrayal Weekly

Betrayal Weekly is back for a new season. Every Thursday, Betrayal Weekly shares first-hand accounts of broken trust, shocking deceptions, and the trail of destruction they leave behind. Hosted by Andrea Gunning, this weekly ongoing series digs into real-life stories of betrayal and the aftermath. From stories of double lives to dark discoveries, these are cautionary tales and accounts of resilience against all odds. From the producers of the critically acclaimed Betrayal series, Betrayal Weekly drops new episodes every Thursday. If you would like to share your story, you can reach out to the Betrayal Team by emailing them at betrayalpod@gmail.com and follow us on Instagram at @betrayalpod and @glasspodcasts. Please join our Substack for additional exclusive content, curated book recommendations, and community discussions. Sign up FREE by clicking this link Beyond Betrayal Substack. Join our community dedicated to truth, resilience, and healing. Your voice matters! Be a part of our Betrayal journey on Substack.

The Joe Rogan Experience

The official podcast of comedian Joe Rogan.

Emergency Intercom

Emergency Intercom is a comedy podcast by Enya Umanzor and Drew Phillips. There is no emergency, but there is an intense need for attention, so maybe listen up… You don’t want to know what happens if you don’t. (we will be violent)

Advertise With Us

Mary & Bill: An Ohio Cold Case

Episodes

.css-14f5ked{margin:0;word-break:break-word;display:-webkit-box;-webkit-box-orient:vertical;box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;}7. The Time to Live

.css-r6mb8g{margin:0;word-break:break-word;display:-webkit-box;-webkit-box-orient:vertical;box-orient:vertical;-webkit-line-clamp:1;overflow:hidden;}6. Behind the “Blue Wall” (Sort Of)

5. And She Was Gone

4. A Crime of Passion?

3. A Dimly-Lit Welcome

2. Everybody Isn’t Going to France

1. Their Deaths Still Haunt

Trailer - Mary & Bill: An Ohio Cold Case

Popular Podcasts

7. The Time to Live

6. Behind the “Blue Wall” (Sort Of)