Robin Ann Graham was 18 and a college student when she disappeared on November 14, 1970, in Los Angeles. That evening her car ran out of gas while she was driving southbound on the Hollywood Freeway near the Santa Monica Boulevard exit. She phoned her parents asking them to pick her up, and a California Highway Patrol officer stopped and offered help; Graham told the officer assistance was already on the way.

Witnesses reported a white male in his mid-20s, wearing bell-bottoms and a turtleneck, approached Graham while a light blue 1957–1960 Corvette was parked behind her car. Observers last saw Graham voluntarily enter the Corvette. When her parents arrived shortly afterward they found her car locked and abandoned; neither Graham nor the man were there. Despite searches and media attention, she was never found and foul play is suspected. Over time speculation linked her disappearance to other unsolved cases, including suggestions about the Zodiac Killer, but no definitive connections have been established.

If anyone was in the area that night or remembers seeing a light blue late-1950s Corvette or the man described, please share what is known.