[1] After completing his naval service Rock made some more film appearances and began writing screenplays.
The pair later cooperated on the screenplay for Allan Dwan's final film Most Dangerous Man Alive (1960).
In 1967 Rock made his debut as a novelist with a novelization of his screenplay The Extraordinary Seaman for John Frankenheimer.
[2] Rock returned to writing novels with Flickers (1977) loosely based on his father's career in 1920s Hollywood.
He followed this with a trilogy of novels of an English family of the 1920s the Stanmores of Abbingdon Pryory with The Passing Bells (1979), Circles of Time (1981) and A Future Arrived (1985).