Susan Becker, 20, was found dead in Boulder Canyon on July 1, 1982, after being last seen by a friend on the morning of June 20, 1982. Fishermen discovered her remains; she had been stabbed 13 times in the torso and neck. A backpack with her identification was found nearby and a knife recovered at the scene was determined not to be the murder weapon.

Susan, described as a free spirit who grew up in the Boulder area and who frequented the Pearl Street Mall, had been planning to travel to Idaho for a Rainbow Family gathering when she disappeared. For decades the case remained unsolved, but later investigative work and advances in DNA testing linked a series of violent crimes to John Agrue, a man with a prior homicide conviction who moved to Boulder after parole in 1982. No usable DNA from Susan’s case was available, but the FBI Behavioral Analysis Unit found strong similarities between her killing and other crimes tied to Agrue.

In 2013 the Boulder County Sheriff’s Office announced it would pursue charges if John Agrue were alive; Agrue died in 2009 of an accidental prescription medication overdose and the case was later closed with a status of death of offender. Did anyone who knew Susan or saw her in Boulder in June 1982 notice anything unusual or remember where she was planning to go?