Aging actress hires scientist developing youth serum involving brain fluid extraction. She takes it, but unintended consequences transform her into a homicidal creature.

A rich actress who has gotten too old for leading roles employs a scientist who is working on a formula for eternal youth. The formula involves withdrawing certain fluids from the human brain. She takes the serum, but its unforseen side effects turn her into a murderous monster.—Anonymous

An old rich actress name Ruth Warren finances a scientist named Gregory to create a serum to help her obtain her youth again, so she can receive more acting roles. However she doesn't know that he has been using the brains from cadavers in order to create the serum, and that is the only way that she can keep her youthful appearance. Ruth's dependence on the serum causes her to crave more, and turns her into a murderous monster.—charmardee-smith