John Markle

John Laurence Markle (December 25, 1941 — November 16, 1987) was an American murderer. Born to actress Mercedes McCambridge and novelist William Fifield, Markle took the surname of McCambridge's second husband, film and television director Fletcher Markle, who adopted the boy. Markle, said to be brilliant, had an uneven home life as a young person. He earned a master’s from UCLA in 1968, and married Christina Mull i…