On May 26, 1990, a woman named Marlene Warren answered the front door at her home in Wellington, Fla.
The clown first handed her flowers and balloons, and then shot her.
12 years after Marlene's death, Michael married Sheila Keen who was initially suspected of being the clown.
And they learned a new detail about Michael Warren and Sheila Keen: They had married each other a dozen years after Marlene Warren's killing, and were operating a restaurant together in Tennessee.
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Sheila Keen Warren, 54, was arrested for the May 1990 murder of her husband's previous wife, Marlene Warren, 40.
In a case described as freaky by police officers in Virginia, it is claimed Sheila Keen Warren shot Marlene Warren, according to the BBC.
Until her arrest, Keen Warren had forged a peaceful life with Michael in the lakeside home, neighbors said.
Michael Warren, now 65, also was a suspect in the 1990 investigation.
Marlene Warren's mother, Shirley Twing, 87, had doubted an arrest would ever happen. The clown was holding a flower arrangement and two balloons. Aherns, who was in a cast at the time, because he had experienced a vehicle crash earlier, said he somehow made his way to his mother and yelled at the clown, which led the shooter to turn around. His stepfather, Michael Warren, was on Interstate 95 heading to a casino in Miami. Twing reportedly said. "Son of a gun".
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"We just needed a few of those little pieces of the puzzle and we were able to do that with the new technologies in DNA and we were able to complete the puzzle and I think that's what led to the indictment", she said.
While never charged with Marlene Warren's murder, Michael Warren did go down in 1992 on a trunkload of charges connected with his ownership of West Palm Beach's Bargain Motors - one count of racketeering, six counts of grand theft between $300 and $20,000, and 21 counts of odometer tampering. Keen Warren did not resist, and Michael could only watch as the cuffs were slapped on his wife and she was whisked away in a patrol vehicle.
By then, DNA testing was far more advanced than it had been in the early 1990s, and they made a decision to pursue charges against Keen-Warren after they retested orange fibers and hair strands they found in the auto the killer was believed to have used. "I will feel peace when the hammer falls at guilty".
Still, the case remained unsolved and reopened the investigation in 2014. The couple was said to have moved to Tennessee, according to the Washington Post. They subpoenaed her then-husband and mother-in-law.
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