|Directed by||Juan Ibáñez|
|Written by||Jack Hill|
Luis Enrique Vergara
|Music by||Enrico C. Cabiati|
|Edited by||Felipe Marino|
Filmica Vergara S.A.
|Distributed by||Columbia Pictures|
Fear Chamber is one of four low-budget Mexican horror films Karloff made in a package deal with Mexican producer Luis Enrique Vergara. The others are Isle of the Snake People, The Incredible Invasion, and House of Evil. Karloff's scenes for all four films were directed by Jack Hill in Los Angeles in the spring of 1968. The films were then completed in Mexico.
Scientists discover a living rock beneath a volcano. It feeds on the adrenaline of frightened young women, so the scientists construct a fear chamber and kidnap young girls to feed the creature.
- Stephen Jacobs, Boris Karloff: More Than a Monster, Tomohawk Press 2011 p 503