La Guerre Secrete is divided into four separate vignettes, each scene representing a day in the life of international espionage agents. Stories involve a secret agent (Vittorio Gassman) who goes undercover as a kidnapper, an attempt to impede a Russian attack on two submarines, and an undercover agent confronting a traitor in the Berlin offices of the CIA. Linking the stories is Robert Ryan as a US Intelligence chief. Terence Young directed the English-language sequences, while Christian-Jacques and Carlo Lizzani handled the French and Italian sequences, respectively. German director Werner Klinger's name does not appear on the US credits of The Dirty Game, inasmuch as his scenes were cut from all American prints. Dirty Game sank without a trace on its initial release, only to pop up on television, intermittently, throughout the '70s.