Couple Arrested in First Aspen Slaying in 12 Years

Police believe William and Nancy Styler are responsible for the Nancy Pfister killing.
3:00 | 03/04/14

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Transcript for Couple Arrested in First Aspen Slaying in 12 Years
Now to a break in a mysterious murder case in aspen. The first murder there in 12 years. A couple is in custody this morning charged with killing longtime resident Nancy Fister who was found dead in her home last week. ABC's bazi kanani has the story. Reporter: This morning investigators in a small resort town of aspen, Colorado, believe they know who was responsible for the death of Nancy Fister, a 57-year-old philanthropist found dead in her home last Wednesday. They were ten apartments of miss Fister starting end of November possibly the beginning of December. Reporter: Fister was renting her home out to this middle-aged married couple William and Nancy styler while she was on an extended trip to Australia. Fister returned to her home just days before her body was found writing on her Facebook wall in January, I'd like to stay in Australia but the people that were supposedly taking care of my house are not doing what they said they would do and they're not paying rent and they haven't paid utilities. I have no idea how someone could do something like that and especially to her and I think that, you know, my mom could never hurt anything or hurt anyone and that is one thing that everyone that knew her knew. Reporter: The stylers had been charged with first degree murder and conspiracy to commit murder for what investigators believe happened inside this picturesque mountain chalet. She cared about a lot of people and helped the wrong people this time. Reporter: Pfister's daughter julanan in disbelief. In fact, authorities initially assumed it must have been a suicide. This has been a shock to the aspen community because murder and really any violent crime is something we don't have here. Reporter: Nancy Pfister was known for having many friends and the sheriff is considered a good friend and he is not talking about a motive or cause of death. Aumz results are not in yet.

This transcript has been automatically generated and may not be 100% accurate.

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