Grimes appeared in only six films, and largely retired from show Business in the late 1970s (except for an episode of Matt Houston in 1983). He still lives in Los Angeles and has remained out of public view since that time, working for a charitable organisation. "I got to the point where the work wasn't up to the quality that I wanted," Grimes told American Profile magazine in 2011. "I'm very happy in my decision."
Gary Grimes' first major role was in the 1971 film Summer of '42, playing a teenager who has an affair with a beautiful older woman, played by Jennifer O'Neill. For that role, Grimes was nominated in 1972 for a Golden Globe Award as Most Promising Newcomer, as well as the Male and a BAFTA Award as Best Newcomer.
Grimes' other film credits include Cahill U.S. Marshal (1973) alongside John Wayne, The Spikes Gang (1974) with Lee Marvin and Ron Howard and the cult Disney film Gus (1976), about a mule that kicks field goals. He was offered a TV series during that time period, but turned it down.
