Secret Agent (1936) (repost)

After three British agents are assigned to assassinate a mysterious German spy during World War I, two of them become ambivalent when their duty to the mission conflicts with their consciences.

Director:

 Alfred Hitchcock

Writers:

 Campbell Dixon (play), W. Somerset Maugham(novel), 4 more credits »

Stars:

 John Gielgud, Madeleine Carroll, Robert Young - via IMDB

https://archive.org/details/Hitchcock_Secret_Agent