I'll bet that "Talking Heads" poster in Dan's bedroom has seen some pretty wild stuff even before Herbert West moved in!
I watched this for the umpteenth time via Joe Bob's Last Drive-In. He had some good details about the production I'd never heard- namely it was made by "theater people" who rehearsed extensively before they filmed which is uncommon. Very similar to "Return of the Living Dead" which may explain the quality of those films over other schlocky horror movies of the time.
And there was a whole hypnosis "mind control" subplot involving Dr. Hill that was taken out.
Somewhat more extensive previous review here.