Retired in the mid-'70s and co-wrote her autobiography, "Escape to Freedom: A Biography of Cynthia Lynn", in 2002, in which she admitted an affair with
Hogan's Heroes (1965) star
Bob Crane during the run of the first season in which she appeared. She also exposed her onetime relationship with
Marlon Brando, whom she appeared with in
Bedtime Story (1964), that produced daughter Lisa.