The Secret Invasion

During World War II, British intelligence recruits five imprisoned criminals for a mission so dangerous that it amounts to a death sentence. Each man is a specialist in his own field of crime, and each is offered freedom in exchange for taking part. Commanded by Major Richard Mace of British Intelligence, the group is sent into Yugoslavia, where the Germans are holding an Italian general in Dubrovnik. Freeing him could shift the course of the war, and the men must carry out the operation behind enemy lines with their liberty as the only reward.

The Secret Invasion is a 1964 American war film directed by Roger Corman, the fourteenth of the nineteen features he directed in chronological order, coming between The Haunted Palace and The Masque of the Red Death. R. Wright Campbell wrote the screenplay, and Gene Corman produced. Stewart Granger leads the cast as Mace, alongside Raf Vallone, Mickey Rooney, Edd Byrnes, Henry Silva and William Campbell as the five convicts. The film runs 97 minutes and was released in September 1964.

Audience response has been modest. On IMDb it holds a rating of 5.9 from around 1,500 votes, and on TMDB its rating is 5.8 from a small number of votes, indicating limited viewership and mixed appreciation rather than strong praise.