ASPEN - An Aspen man entered a guilty plea on Friday for the death of 57-year-old Nancy Pfister.
William Styler was sentenced to 20 years in prison for second-degree manslaughter.
Styler and his wife Nancy Styler along with Katherine Carpenter were initially charged with first-degree murder, conspiracy to commit murder and being an accessory after the fact.
Carpenter, 56, of Aspen was arrested on March 14. Charges were dropped against Carpenter, and she was released on Friday, but authorities said they will continue the investigation against her, according to Pitkin County Sheriff Joe DiSalvo.
Nancy Styler's first-degree murder charge was dismissed on Tuesday. The Aspen Times reports prosecutor Andrea Bryan declined to discuss what led to Tuesday's dismissal of charges against Nancy Styler. District Attorney Sherry Caloia says her office "could not prove that Ms. Styler was involved in the crimes."
According to prosecutors, William Styler hit Pfister with a hammer while she slept. They said it was a crime of passion.
Pfister, whose parents co-founded the Buttermilk ski area, was found bludgeoned to death in her home on Feb. 26.
**Editor's note: A previous version of this story inaccurately reported information about Nancy Styler. As noted in the above story, all charges were dropped against Nancy Styler on Tuesday, June 17.**
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