Florida killer clown case closes after 33 years with surprise plea deal

Sheila Keen-Warren pleads guilty to second-degree murder while claiming innocence in doorstep murder of husband's former wife

One morning in May 1990, a clown came to Marlene Warren's door, handed her carnations and balloons, then shot her dead in front of her son.

In West Palm Beach on Tuesday, in a secretive lunch-break deal, her husband's alleged mistress and future wife finally pleaded guilty to being the killer, even though she still insists she is innocent. The surprise move closed a case strange even by Florida standards.