A convicted strangler, studying the paranormal in his jail cell, learns to make himself invisible. As an invisible man, he escapes from prison to stalk and strangle the five women who testified against him at his trial. Robert Foxworth plays the police lieutenant assigned to protect them, and to catch the invisible strangler.
A Criminally Insane Murderer Escapes From The Institution -- By Becoming Invisible!
Also Known As:
The Astral Factor
The Astral Fiend