On August 7, 1977, a quadruple homicide in Gaston, Oregon left four people dead: 24-year-old Margo Compton, her twin 6-year-old daughters Sylvia and Sandra, and 19-year-old Gary Seslar, who was the son of Margo’s boyfriend. All four victims had been shot in the head in what authorities described as execution-style killings. The twin girls were found in their beds clutching their teddy bears.

Investigators linked the murders to retaliation for Margo Compton’s decision to testify against members of the Hells Angels in a San Francisco pimping trial. A long investigation followed, led for years by Detective Sergeant Mike Graham. A prison informant, Michael Thompson, later said Odis Buck Garrett had admitted ordering the killings and named Robert G. Bugeye McClure as the triggerman.

The case reopened after that information and ultimately produced convictions for those implicated.