Cold case murder solved; Boulder police make arrest in 1994 homicide of city employee


Boulder police have arrested the suspect investigators believe is responsible for the 1994 death of 48-year-old Marty Grisham. Grisham was gunned down around 9:30 p.m. on Nov. 1, 1994, as he answered a knock at his apartment door. When Grisham opened the door, an assailant shot him four times before fleeing the scene. He had been having dinner with his girlfriend at the time. Grisham lived in the 5600 block of Arapahoe.


Grisham was rushed to the hospital, where he died of his injuries. Grisham was the City of Boulder’s Data Processing Director at the time of his death.


Today, Thursday, Jan. 5, police arrested Michael Martin Clark (DOB 8/30/1975) in unincorporated Summit County, CO, on suspicion of First Degree Murder.


Clark was an acquaintance of Grisham’s daughter at the time of the homicide. Initially, he was a person of interest/suspect in the crime because he had admitted to stealing a book of checks from Grisham, which he used to forge nearly $4,500 from Grisham’s account. Grisham reported the theft and identified Clark as a suspect when he discovered the theft on Nov. 1, 1994. Grisham was killed later that night.

Clark was arrested for Forgery on Nov. 3, 1994, and later pled guilty to the charge. He said he was able to access Grisham’s home because he’d been given a key by Grisham’s daughter so he could take care of Grisham’s cat. He denied any knowledge of or involvement in Grisham’s murder.


Boulder police searching Grisham’s apartment the night of the murder

“Cold cases like this one are often solved through good, old-fashioned detective work. Diligence, attention to detail and perserverence – that’s how detectives solved this crime,” said Boulder Police Chief Mark Beckner.


The FBI, the Bureau of Alcohol, Tobacco and Firearms (BATF), the DEA and the Northern Colorado Drug Task Force provided technical and investigative assistance during the investigation, for which the Boulder Police Department is grateful.


The case number is P94-19535.


Anyone with information on this case is asked to contact Detective Chuck Heidel at 303-441-3339. Those who have information but wish to remain anonymous may contact the Northern Colorado Crime Stoppers at 1-800-222-TIPS (8477) or 1-800-444-3776. Tips can also be submitted through the Crime Stoppers website at Those submitting tips through Crime Stoppers that lead to the arrest and filing of charges on a suspect(s) may be eligible for a cash reward of up to $1,000 from Crime Stoppers.