31 years after the Potomac River Rapist attacked his first victim, the detectives who solved the case are telling their story exclusively to WTOP American Nightmare Series Host Paul Wagner.

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The D.C. Court of Appeals has denied Daron Wint a retrial in his quadruple murder conviction. Hosts Megan Cloherty and Jack Moore sit down to talk about the three-judge panel's decision.

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Host Paul Wagner brings listeners a huge update about Giles Warrick that changes the course of...everything.

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When Giles Warrick is questioned by police in the hours after his arrest, the 60-year-old tells them he doesn't know how his DNA turned up at 10 different crime scenes in DC and Maryland. But, what will police find when they search his South Carolina home?

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In November 2019, detectives from Montgomery County, Maryland, and Washington, D.C., make their way to Conway, South Carolina, where investigators are certain they will find their "unknown subject." They head to a ranch house on a rural country road where a 60-year-old man is living with his girlfriend. But, what will they find when they knock on the door?

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By 2018, investigators had tired of waiting for another DNA cold hit and decided to hand the case to a cop named 'Smugs.' A young Montgomery County police officer who had already used genealogy to solve several high profile rape and murder cases. Crimes that had stumped detectives for years. Could 'Smugs' be the one to finally give a name to the Unknown Subject?

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As the nineties turned into Y2K Detectives Dean Combee and Joe Mudano were still trying to solve their cases. Years of investigating had gotten them nowhere until the FBI called with stunning news. DNA from all of the attacks had been linked to one man. A fact that floored the veteran investigators who never saw it coming.

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In the early to mid nineties, Montgomery County Police Detective Joe Mudano knew he had a ruthless rapist preying on women but he had no idea who he was. DNA linked a number of cases, but a clear description remained elusive. More maddening for Mudano was the fact the Unknown Subject seemed to have inside information. But how?

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Seven years before Christine Mirzayan was murdered in Georgetown, a man cut the phone lines to a house miles outside the city and raped a teenage baby sitter. The first in a string of similar attacks spread out over several years. Kelly survived that awful night and in this episode tells her harrowing story. A crime that was nothing like the murder in Georgetown.

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In the summer of 1998, a brilliant scientist walking home from a party is grabbed off the street and killed. Her body is found the next day in a wooded area just steps from the Georgetown University campus. It was a gruesome scene. DC Police had no witnesses and no suspects, but they did have a valuable clue: a key piece of evidence the killer left behind.

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Ten months after Prince George's County Police Detective Bernie Nelson began using genealogy to track Sherry Crandell's killer through his relatives - the research continues on a promising family tree.

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