Percepto! The movie sensation that reached out and grabbed you--almost literally. Beloved horror movie producer/director William Castle's gimmick rested on a clever plot device: fear makes a creepy-crawly creature grow on people's spines; the only way to disable it is to scream! To make sure audiences got into the spirit, certain seats would be wired with low-voltage electricity to give the patrons a little extra reason to shriek! The movie itself stars Vincent Price as a scientist who actually manages to isolate one of the creatures, which promptly gets loose. And one of the characters is a mute... Castle and writer Robb White deftly twist the screws, and the cast is more than up to it.