Reporter: The chilly charm of a winter evening in aspen, Colorado, shatters like ice. At a home, high up on west buttermilk road, upstairs in a bedroom, locked in a walk-in close element, wrapped with... See More
Reporter: The chilly charm of a winter evening in aspen, Colorado, shatters like ice. At a home, high up on west buttermilk road, upstairs in a bedroom, locked in a walk-in close element, wrapped with care, a body. A battered, bloody, and very much dead body. Oh my god. 911. My friend! Ma'am, tell me exactly what happened. I found my friend in the closet. She's dead! Reporter: That shrieking voice on the phone, a woman in all-out panic is Kathy carpenter. Fearing for her life, afraid the killer is still nearby. Her frantic, sometimes garbled 911 call comes from behind the wheel of her car as she bolts down the mountain, away from the body in the closet to safety. Okay, ma'am, I need you to take a deep breath. I -- So that I can send you help. I can't. My friend is in her closet dead, full of blood, wrapped in a thing! Reporter: Seconds later, this dash cam video shows a police officer at the side of the road, trying to calm her down. Try and relax, okay? Reporter: The woman she just discovered is Nancy Pfister, one of her closest friends. Kathy carpenter drives up to Nancy's house and she looks around and she notices, number one, the bed is made. And she said, this is not right. Nancy Pfister never made a bed in her life. Something doesn't add up here. The master bedroom closet door was locked and that the key was not in the lock to that closet, which she said was unusual. Developing story out of aspen. Found dead. The aspen community is horrified. There is a lot of concern. Reporter: Aspen is not the murder capital of anywhere. Very rare, yes. This was the first murder in over a decade in aspen. Reporter: In this playground made of snow and money, the rich and famous, billionaires by the dozen, come for the scene and to be seen. Sometimes there's even skiing. And now, on this February night in 2014, a dead body in a closet, of all places. What happened only slightly more shocking than who it happened to. Nancy Pfister, the woman in the closet, was a prominent jet-set heiress. Her family, one of the oldest, most respected names in Colorado. Ski mountain pioneers. Give me a sense of what the pfisters meant to that town. They were often referred to as aspen royalty. These were some of the founding families that actually got aspen on the map as a ski resort. My grandparents were there very long ago before aspen was aspen. Reporter: Nancy's 28-year-old daughter Julianna says freedom was the hallmark of her mother's life, fitting since Nancy was born on Independence day. She loved that fact. That she was forth on the 4th of July. She's like, you guys, you're throwing all these parties for me. Fireworks are for me for sure. Reporter: High-flying celebrations would become a tradition. With that face, that family, that trust fund, it was clear even from an early age that for Nancy Pfister, the sky was the limit. There was something about her that just really drew people to her. Moth to the flame. Reporter: She never had a career, perse, but sometimes it seemed that being Nancy Pfister was a full-time job. She was not the run of the mi mill, what, I guess what you think aspen has become kind of person. She was cute. Reporter: Unanimous sip's aspen high classmate, David cuffin. Nancy was a presence. A light. I don't think I ever have melt a person in my life quite like Nancy. Reporter: Local spa owner Rita bolino says Nancy wasn't one for manicures, but she knew her well. Her whole life was about travel and fun. That was her life mantra, I think. Reporter: She sold herself as aspen's ambassador to the world. Acting as a tour guide for a French TV show. Chauffeuring the dalai lama when he came to town. Hanging out with the likes of Goldie Hawn and hunter S. Thompson. Hollywood's leading men like Michael Douglas and jack Nicholson were rumored to be part of Nancy's romantic life. I went up there one day, I knocked on the door and jack Nicholson answers the door. I was like, hi, jack. Nancy here? Reporter: Nancy lived an played like a classic trust fund kid. But with a catch that will soon become significant. In truth, the heiress lived on a budget. The money was controlled tightly? The interesting thing about when she's referred to as a socialite, someone who is very wealthy, it's much more complicated than that. The money was controlled by a law firm in aspen and it was basically dolled out as an allowance. Reporter: That allowance reportedly $7,000 a month. To pay for some of her jet-setting holidays, Nancy decided to rent out her spacious, multi-million dollar mountain home. She needed the money. Reporter: Which is how she met trey styler and his wife Nancy. They were moving to down from Denver and happy to rent Nancy's house while she wintered in Australia. It was classic Nancy Pfister. Unpredictable, spur of the moment. Yet there were those that worried one day unanimous sip's carefree lifestyle would get her into trouble. All those men and her busy love life. Could one of them be a killer? Sometimes these weren't people she knew very well. Reporter: In the days after her death, there was plenty of room for that kind of speculation, because police weren't talking. What matters is that my mom is gone. And we need to figure out who did it. Reporter: Investigators left with a wrapped body in a closet and so many questions. Who was this careful killer? We were investigating the case and trying to figure out who Nancy Pfister was, trying to figure out who could have harbored a motive and who could have done this to her. Reporter: It was a stunning moment sure to bring bad press for this quaint old town of fewer than 7,000 people. How ready was the town for this kind of explosion? This is a story of a very wealthy town that doesn't want its dirt made public.
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