A woman who pleaded guilty to dressing as a clown and in 1990 murdering the wife of a man she later married was released from prison on Saturday, ending a case that has been strange even by Florida standards.

Sheila Keen-Warren, 61, was released 18 months after she pleaded guilty to second-degree murder for the shooting of Marlene Warren, Florida department of corrections records show. The plea deal came shortly before her trial would have started.

Keen-Warren, who has maintained her innocence even after her plea, was sentenced to 12 years in prison. But she had been in custody for seven years since her arrest in 2017, and Florida’s law in 1990 allowed significant credit for good behavior. It had been expected she would be released in about two years.

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Marlene Warren’s son, Joseph Ahrens, and his friends were at home when they said a person dressed as a clown rang the door bell. He said that when his mom answered, the clown handed her some balloons. After she responded, “How nice,” the clown pulled a gun and shot her in the face before fleeing.

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Palm Beach county sheriff’s investigators had long suspected Keen-Warren in the slaying, but she wasn’t arrested until 27 years later when they said improved DNA testing tied her to evidence found in the getaway car. Rosenfeld has called that evidence weak.

At the time of the shooting, Keen-Warren was an employee of Marlene Warren’s husband, Michael, at his used car lot. Since 2002, she has been his wife – they eventually moved to Abingdon, Virginia, where they ran a restaurant just across the Tennessee border.

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Aronberg last year conceded that there were holes in the case, saying they were caused by the three decades it took to get it to trial, including the death of key witnesses.