Invisible Strangler A.K.A. The Astral Factor (1977)

An American science fiction crime film directed by John Florea, starring Robert Foxworth and Stefanie Powers.
A prisoner escapes prison by becoming invisible and uses this power to strangle beautiful women. Detectives try to catch him.
This was stupid and boring. The plot had some holes and the characters were shallow. The editing was poor and so were the audio and video. Despite the nature of the strangler's victims, no female anatomy points were earned. It's just another crappy movie from the late '70s. I don't believe there is anything else to say about it. I rate it poor and you probably shouldn't watch it.