A surgeon with a seemingly perfect home life, Dr. Toni Henthorn dies while hiking with her husband during a romantic weekend getaway; investigators ask whether Henthorn was the victim of an accident or the target of a black-hearted master plan.

Horror strikes the wealthy enclave of Aspen, Colo. when heiress Nancy Pfister is found brutally murdered in her mountain home; as police work to untangle a twisted web of suspects, a shocking confession puts a sudden end to the investigation.