The Unknown Terror (1957)

After her brother (Charles H. Gray) disappears in the Caribbean while exploring a cave known as the Cave Of The Dead, his sister (Mala Powers), her husband (John Howard) and her ex-lover (Paul Richards) go in search of him. Directed by Charles Marquis Warren (BACK FROM THE DEAD), this mixture of horror and science fiction is incredibly lame. When the "terror" is finally revealed, it turns out to be a big yawn. The script is poorly constructed and its characters behave stupidly rather than logically. As the "hero", Paul Richards is a zero. The sharp and nuanced B&W CinemaScope cinematography by Joseph F. Biroc (FORTY GUNS). Fans of B 1950s horror may have some nostalgia for something like this. Everyone else needn't bother. With May Wynn, Gerald Milton and Sir Lancelot.