On May 26, 1990, Marlene Warren answered the front door of her Florida home to see a woman wearing a clown costume, complete with wig and bulb nose, and carrying flowers and balloons—one of which said "You're the greatest!" The clown-costumed woman shot Warren in the face, killing her. Nearly three decades later, an arrest has been made in the case, NBC News reports. Sheila Keen Warren, a suspect in the case almost from day one, was arrested in Virginia, officials announced Tuesday. Sources told detectives within months of Marlene Warren's murder that Sheila Keen was having an affair with Marlene's husband, Michael Warren, for whom she worked. But there was never enough evidence to charge her until DNA evidence could be retested recently with new technology.
Michael Warren was also a suspect, especially since friends and family said his marriage to Marlene was struggling, but he ended up in prison on unrelated charges connected to his car rental agency for three years and then went off the radar. In 2002, he married Sheila Keen. Police say he was present when the 54-year-old woman was arrested; the two were apparently running a Tennessee restaurant together. "Any murder's horrific. It doesn't matter whether you're wearing a clown costume or not," Palm Beach County sheriff's Sgt. Richard McAfee said at a press conference after the arrest, per CBS News. Marlene Warren, 40, had just finished breakfast with her 22-year-old son and his friends when she was shot, Local 10 reports. Sheila Warren is being held pending extradition to Florida, where she faces a charge of first-degree murder. (Read more cold cases stories.)