Throne of Satan (1967)

Dominat is his name: He's the prince of infernal scientific kingdom situated miles deep inside the walls of a volcanic crater on the West Indian island of Dominica. He possesses an ultimate weapon geared to destroy the world's armies and navies. After which event Dominat will crown himself Emperor. MARK HOOD has to get into Dominat's electronic torture-palace - without Tommy Termayne. His fellow Intertrust agent is already there and about as safe ans an icicle in hell. Hood figures out a way to accomplish his mission: woo a singularly treacherous beauty, and play her unusual night-games! And if that romantic ploy fails, there's always . . . MURIMOTO.