The Killer Clown: Murder on the Doorstep (SundanceTV, Thursday, June 12, 2025)

The Killer Clown Key Art

SundanceTV revisits a bizarre cold case this Thursday with The Killer Clown: Murder on the Doorstep, airing at 10 PM ET. The true-crime documentary unravels the twisted tale of Marlene Warren’s murder—a case that initially baffled investigators but ultimately saw a resolution thanks to advancements in DNA technology.

The investigation kicks off with an affair—Marlene’s husband, Michael, having stepped outside the marriage with a woman named Sheila. The trail leads to Sheila, further solidified by a store clerk who identifies her as having bought a distinctive clown costume similar to the one worn by Marlene’s killer. But without hard proof, the investigation stalls, the case growing colder with each passing year.

RELATED:   Duck Dynasty: The Revival: Alone in the Woods (A&E, Sunday, July 13, 2025)

The turning point arrives in 2017 when new DNA testing breaks the decades-long stalemate, finally giving detectives the evidence they need to make an arrest. The Killer Clown doesn’t just recount the facts; it breaks down the science behind the breakthrough, showing how forensic advancements can bring closure to seemingly unsolvable crimes.

RELATED:   Mysteries of the Abandoned: Hidden America: Idaho's Atomic Ghost Town (Discovery, Wednesday, July 9, 2025)

The Killer Clown: Murder on the Doorstep premieres Thursday, June 12th at 10:00 PM ET on SundanceTV.

Andrew Martins, reviewer, recapper, deep diver, scifi specialist. Thinks Blakes 7 is better than Star Trek. Yes I do go to fan conventions and no I don't dress up. Well okay maybe I do a bit.