207 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Case Description
Any updates on this case?
Barbara Mahoney, a 22-year-old woman, tragically lost her life on June 29, 1987, in a case that became part of a series of murders committed by Harrison Graham, a serial killer operating in Philadelphia during that time. Barbara Mahoney, along with six other women, fell victim to Graham's heinous acts. Graham, who was later convicted of seven counts of first-degree murder, used his apartment as the site of these crimes, which were characterized by strangulation during or after drug use and sexua ...Read More
Links to Additional Sources (0)
See any mistakes?Victim Details
Barbara Mahoney
Female
Philadelphia
PA
1987-06-29
22
Barbara
Mahoney
11/17/2025






