There is no better companion film for The Thing with Two Heads than this, a movie that’s pretty much the same idea: Dr. Roger Girard (Bruce Dern!) is a scientist experimenting with head transplantation who finally gets the chance to do the experiment that everyone says shouldn’t happen. Hijinks, as they say, ensue.

Girard had a caretaker who was killed. That man’s son Danny (John Bloom, The Dark, The Hills Have Eyes Part II, Brain of Blood) is a giant with great strength and the mild of a child. Manuel Cass is an escaped mental patient who is critically injured after killing Danny’s dad. So you know — why not transplant their heads on the same body? What can go wrong?

Larry Vincent, one of the first film riffers as horror host Seymour on Los Angeles’ Fright Night on KHJ-TV and Seymour’s Monster Rally on KTLA, shows up, as does Pat Priest (the second Marilyn Munster, of course), Casey Kasem (I really need to do a Letterboxd list on the films of Casey because, well, I’m a maniac) and stuntman Gary Kent (who the film Danger God was about).

Once, on The Tonight Show with Johnny Carson, Dern revealed he was not paid for acting in this movie. He was given a check for $1,700 that bounced and when he returned to the set for the next day of filming, it had already been shut down.

It certainly made money, as American International Pictures paired this with the Amicus movie Scream and Scream Again.

You can watch this for free on Tubi with and without commentary by Rifftrax.