The 33-Hour Confession: How Interrogation Technique Unmasked Ohio Serial Killer
Detective Kim Mager's marathon questioning of Shawn Grate became the breakthrough moment in one of America's most elusive murder cases
In February 2016, Ashland, Ohio—a city of 21,000 in the industrial Midwest—became the epicenter of a serial murder investigation that would captivate true crime audiences a decade later.
Shawn Grate, a 37-year-old drifter with a violent history, held a woman captive in a vacant house over two nights, subjecting her to repeated sexual assaults. What set this case apart from countless other predatory crimes was what followed: an emergency call that saved one life and unraveled the deaths of at least four others.
When the victim—identified as "Jane Doe" in court documents to protect her privacy—managed to contact emergency services, Ashland police moved quickly. Their arrival at the dilapidated house on Cottage Street would mark a turning point in understanding Grate's true criminal scope.
**The Marathon Interrogation**
What followed was Detective Kim Mager's 33-hour interrogation of Grate—a grueling session that stands as a textbook example of modern American interrogation methodology. Mager, a specialist in sex crimes investigations with years of experience in high-stakes questioning, guided Grate through his confessions across multiple sessions.
