The Beast of Yucca Flats

The Beast of Yucca Flats is a Bmovie horror film released in 1961. The film stars Swedish former wrestler Tor Johnson and was both written and directed by Coleman Francis. The plot concerns a Soviet scientist Johnson, who defects and flees to a Nevada Test Site called Yucca Flats, only to be turned into a monster by radiation, who then menaces the desert. The film has very little dialogue and most of the speech is done by omniscient narration, provided by writer and director Francis.

A woman Lanell Cado steps out of a shower and is attacked and strangled to death by a mysterious man as the sound of a clock reverberates before going silent.Later in Yucca Flats, Nevada, Soviet scientist Joseph Javorsky Tor Johnson has defected from Russia and arrives in America with a briefcase carrying various military secrets, including the Soviet moon landing. Javorsky and his American contacts are suddenly attacked by a pair of KGB assassins Anthony Cardoza and John Morrison killing Javorskys contacts and bodyguards. Javorsky flees into the desert, walking for a great distance, and the searing heat causing him to discard much of his clothing. When he wanders in range of an American nuclear test, the bewildered Russian is transformed by radiation into a mindless beast with an uncontrollable urge to kill. He proceeds to kill a couple in their car on a nearby road, prompting pursuit from two police officers Jim Archer Bing Stafford and Joe Dobson Larry Aten. ........

Source: Wikipedia