Former Suspect in Aspen Philanthropist’s Murder Denies Helping Husband Kill Her

— -- The wife of the man who murdered prominent Aspen, Colorado, resident Nancy Pfister, says she is innocent and didn't help her husband kill Pfister, despite once being a suspect herself.

“I had absolutely nothing to do with this,” Nancy Styler, 62, told ABC News’ “20/20.”

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Styler's husband, Dr. William F. Styler III, known as Trey, is currently serving a 20-year prison sentence after pleading guilty on June 20 to second-degree murder for bludgeoning Pfister to death inside the Buttermilk Ski Area heiress’ home, which the couple was renting.

Pfister, 57, a philanthropist with a party girl reputation, was found dead inside a walk-in closet in her mountain chalet on Feb. 26 by her friend, Kathy Carpenter, who was also suspected in her murder. After Trey Styler's confession, the first-degree murder charges against Carpenter, 56, and Styler's wife were dropped.

Prosecutors have said that if new evidence comes to light they can re-file charges against Carpenter at any time. As part of a deal, Nancy Styler can never be charged for Pfister's murder.

After her husband confessed to killing Pfister, Styler said she was shocked that he could be capable of such a crime.

“The jail part was a day at the beach compared to learning that the person that you've been with for 32 years committed such an awful crime,” she said.

According to prosecutors, Trey Styler, 66, a former anesthesiologist from Denver, and his wife had intense disagreements with Pfister over whether he and his wife had been paying the $4,000 monthly rental fee on her Buttermilk home. Nancy Styler said the couple did not have a lease because Pfister “didn't want one.”

Pfister had been renting her home to the Stylers while on an extended trip in Australia, prosecutors said. At one point, Styler said Pfitser told her if she helped her pack for a month-long trip to Australia, she wouldn't charge them rent. After she left, Styler said she and her husband moved in, but then they received word that Pfitser was cutting her trip short and wanted them out immediately.

"It was like ... 'How are we going to do this in four days?'" recalled Nancy Styler.

She and her husband moved to a nearby motel in Basalt, Colorado, with a festering grudge against Pfister.

Four days after she returned home from Australia, on Feb. 26, Pfister’s body was discovered wrapped in white and black trash bags and the sheets from her bed.

The Stylers were arrested on March 3, and charged with first-degree murder and conspiracy to commit murder.

Trey Styler admitted to hitting Pfister in the head with a hammer while she slept and hiding her body in a closet, prosecutors said.

“He said, ‘I looked at her peacefully while our life was being torn apart,’ and he said, ‘I lost it,’” Nancy Styler said.

Nancy Styler said her husband told her how he was able to kill Pfister, including how he wrapped a cord around her body to be able to drag her to the closet.

“And he had left the bag -- the murder weapon, the papers, her pearls, her pills -- he had left that all in a bag, and that the bag was in the trunk of my car. And I was driving around with the murder weapon for three days,” said Nancy Styler.