Guns of Darkness

Throughout filming, the film was known as "Act Of Mercy," the title of writer Francis Clifford's novel. At the last minute, the title was changed to the meaningless Guns of Darkness (1962). The front office was worried about its box-office potential and thought the new name was more dramatic, as well as being similar to The Guns of Navarone (1961), which had been a big hit for star David Niven the previous year. It was also reported the film was re-titled for the American market.

Tom carries a chocolate bar as the three fugitives travel across a desert during daylight hours. Yet when he finally divvies it up, it is fresh and still hard (when he broke it up, it snapped nicely) and has NOT melted in the desert heat (undoubtedly because it had been refrigerated until it was needed for this scene!).

Closing credits: The characters in this photoplay are fictitious and bear no resemblance to any real persons living or dead.