Pamela Lincoln and Darryl Hickman, who play the young suitors, actually got married on November 28th after the Tingler release on July 29th 1959. They had two children, and divorced on December 8th, 1982.
The earliest mainstream film to depict an LSD trip.
William Castle toyed with other ideas to frighten audience members, in addition to 'percepto'; among them: rolling bean bags to brush against the legs of audience members, speakers mounted at different areas that would give a 'screech' when the tingler appeared, and possibly even using 'shills' to operate some type of mechanical device to tickle the legs of the audience members; but the only viable way of doing it was by attaching buzzers in select seats to coincide with the appearance of the tingler- 'percepto'.
The Tingler is a large scale model of velvet worm, also called peripatus. It has its own phylum - Onychophora. It is about half way between and earthworm and an arthropod.
To create the footage of the bright red blood flowing in a black and white film, they simply build a set in shades of black and white so that it would photograph on color film as if were being shot on black and white stock. The flowing bright red "blood" would stand out and create a very dynamic effect. The color footage had to be manually spliced into the black and white release prints. This was in the days before thousands of release prints were needed for a theatrical release.
William Castle: [gimmick] Whenever blood-curdling screams occurred in the movie, hidden buzzers vibrated the seats. (This feature was called "Percepto.") Shills planted in the audience let out their own screams.