@Tim_Eagon
The Yuba County Five were a group of young men from Yuba City, California, with mild intellectual disabilities or psychiatric conditions, who attended a college basketball game at California State University, Chico, on the night of February 24, 1978.

Four of them—
Bill Sterling, 29;
Jack Huett, 24;
Ted Weiher, 32;
and Jack Madruga, 30
—were later found dead;

the fifth, Gary Mathias, 25,[1] has never been found.[2]