Daniel Linn, 24, was found lying in the street in the 4100 block of Josephine Street in Denver in the early morning of October 15, 1975. First responders thought he might have been pushed from a moving vehicle, but after being taken to a local hospital it was determined he had sustained a gunshot wound and he died of his injuries on October 17, 1975.

Investigators learned Linn had been involved in an argument the day before at the Bluebird Theater on East Colfax Avenue, a place he was known to frequent; whether that altercation is connected to his shooting remains unknown. No arrests have been made and no suspects have been publicly identified. The Denver Police Department Cold Case Unit is asking anyone with information to come forward.

If anyone knew Daniel, saw him around East Colfax or Josephine Street in mid-October 1975, or has information about the Bluebird Theater incident, please share what you know with investigators.