Which screenplay by Kenneth Ross  was directed by Fred Zinnemann?
The Day of the Jackal (film) The Day of the Jackal is a 1973 Anglo-French political thriller film directed by Fred Zinnemann and starring Edward Fox and Michel Lonsdale. Based on the 1971 novel "The Day of the Jackal" by Frederick Forsyth, the film is about a professional assassin known only as the "Jackal" who is hired to assassinate French president Charles de Gaulle in the summer of 1963.
Marvin's Room (film) Marvin's Room is a 1996 American drama film directed by Jerry Zaks. The script was written by John Guare and based on the play of the same name by Scott McPherson, who died in 1992. McPherson had completed a screenplay for a film version before he died, however Guare was hired to update it when the film eventually started production years later.