206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Case Description
Any updates on this case?
On August 7, 1977, a tragic and brutal crime occurred in Gaston, Oregon, resulting in the execution-style murders of Margo Compton, her 6-year-old twin daughters, Sylvia and Sandra, and her boyfriend's 19-year-old son, Gary Seslar. Margo Compton, a 24-year-old mother, had previously testified against several members of the Hells Angels in a prostitution trial in San Francisco, making her a target for retaliation by the notorious motorcycle gang.
The investigation into these murders was le ...Read More
The investigation into these murders was le ...Read More
Links to Additional Sources (5)
See any mistakes?Victim Details
Sandra Compton
Female
Gaston
OR
1977-08-07
6
Sandra
Compton
11/15/2025


