Dimension 5 (1966)

An Asian crime lord (Harold Sakata, GOLDFINGER) plots to drop a hydrogen bomb on Los Angeles. Racing against time, an American intelligence agent (an enervated Jeffrey Hunter) and a Chinese agent (France Nuyen) attempt to discover the bomb's location. Directed by Franklin Adreon (PANTHER GIRL OF THE KONGO), this is a rather silly preposterous thriller with sci-fi trappings. With the exception of Nuyen who's not bad, the rest of the acting is amateurish. Although it was released theatrically, it was originally intended as a TV movie which might explain the absence of sex in the film. The film features a device which allows its heroes to go back and forth in time. For example, when someone is assassinated, they can go back a few minutes in time to prevent the assassination. It's all unbelievable comic book nonsense of course but to the film's credit, dopey as its loopy plot and bad acting is, it's eminently watchable. With Donald Woods, Deanna Lund and Linda Ho.