Which screenplay by Kenneth Ross  was directed by Fred Zinnemann?
Black Sunday (1977 film) Black Sunday is a 1977 American thriller film directed by John Frankenheimer, based on Thomas Harris' novel of the same name. The film was produced by Robert Evans, and stars Robert Shaw, Bruce Dern and Marthe Keller. It was nominated for the Edgar Allan Poe Award for Best Motion Picture in 1978. The screenplay was by Ernest Lehman, Kenneth Ross and Ivan Moffat. Ross had previously written the screenplay for "The Day of the Jackal", a similar plot-driven political thriller.
The Sea Wolf (1941 film) The Sea Wolf is a 1941 American black-and-white film adaptation of Jack London's novel "The Sea Wolf" with Edward G. Robinson, Ida Lupino, and John Garfield. The film was written by Robert Rossen and directed by Michael Curtiz.