Perhaps the most noted film for the imaginative gimmicks that producer-director Castle used to give people a thrill. In this one, he hooked up Army surplus vibrating motors to the backs of some theater seats to send tingles up the audience's spines while they were watching the show. If
that did not produce shrieks, then a "plant" in the theater would faint and would be carried out to the lobby by ushers. But this thriller is frightening enough in its own right not to have to resort to antics like those. Price is a scientist who believes screaming releases tensions that would
otherwise kill people. A deaf mute theater operator dies, and Price discovers that the caus...