Aaron Michael Marr, a 37-year-old White man, was fatally stabbed inside his apartment at 210 South Second Street in Ames, Iowa, on the night of September 22, 2007. Emergency responders found Marr still conscious at the door with multiple stab wounds to his neck and back; he told an emergency worker he knew who attacked him but refused to provide a name before dying en route to Mary Greeley Medical Center. He had celebrated his birthday three days earlier.

Investigators found small bags of marijuana and a white powdery substance believed to be cocaine in the apartment and focused on a planned drug transaction. Marr had a telephone contact stored as P-Rock; his roommate Steven Cross said someone known as P.J. was expected at about 9 p.m. Ralph W. Ellis, also known as P.J. or P-Rock, was identified from a photograph and placed with Terrance Jenkins at locations before and after the likely time of the attack, but forensic and search-warranted evidence did not produce charges. No one has been arrested, indicted or convicted in Marr’s murder, and the Ames police continue to list the case as open with a reward offered for information.

Did anyone who knew Aaron or was in that neighborhood on September 22, 2007, see something that could help the investigation?