A murderous mummy is on the loose and it's got the Hammer Films stamp on it, but this tame terror flick never gets the bandages off when it comes to thrills, chills, and gore. A British archeological team consisting of Sir Basil Walden (Andre Morrell), Paul Preston (David Buck), a photographer (Tim Barrett), and psychic linguist Claire (Maggie Kimberley) discover the tomb of Kah-to-Bey, a young heir to Pharaoh who died trying to escape a rebellion. The boy was buried by a loyal slave named Prem, whose mummy stands in a Cairo museum. The expedition is joined by Preston's wealthy, press-hungry father Stanley (John Phillips), who insists they return to Cairo with the body despite warnings of a curse by the tomb's guardian. The curse soon proves to be true as the slave's mummy is reanimated by the guardian and begins murdering each of the explorers who entered the tomb. While Stanley Preston unsuccessfully tries to save his own skin, Paul and Claire find themselves in a showdown with the seemingly indestructible mummy -- until they discover that the strange writing on the boy Pharaoh's shroud may be the secret to their survival.