The film stars Mari Blanchard, Jack Kelly, and Albert Dekker[1] and was theatrically released by 20th Century-Fox on a double bill with Regal's Kronos.

[2][3] She Devil is based on the science fiction short story "The Adaptive Ultimate" by Stanley G. Weinbaum.

Eager to try it on a human being, despite his mentor Dr. Richard Bach's many concerns, Scott finds a consenting patient in Kyra Zelas, a woman with a meek personality who is dying of tuberculosis.

Bach theorizes that a fix to her pineal gland, which may have turned her into a "devil" due to the over-stimulation of the drug, could help her.

Cameraman Karl Struss (of Murnau's Sunrise) slightly over-lights Kyra in the party scene to make her hair seem to glow, a subtle effect for sure.

A spectacular car crash murder scene is an RKO stock shot lifted from the 1952 Otto Preminger noir Angel Face and cropped for the 'scope format.