In 1962, Blake Edwards directed the amazing Experiment In Terror, one of his rare violent thrillers. That same year, he also wrote with his uncle Owen Crump the subject of The Couch. And the script was written by Robert Bloch between Psycho and Strait-Jacket. Owen Crump was formerly a documentary director in the army, The Couch is his first movie for cinema.
The script is really exciting, having Grant Williams killing in crowds and being more and more risky. And Grant Williams is nastily convincing.
I do agree with another reviewer, The Couch deserves better cinematography, like Jo Biroc, and maybe The Couch would have been more nervous. But we have a scary story of a powerful killer with a very strong Grant Williams. The ending is frighteningly apocalyptic.
And it is now available on DVD, so jump and catch.
But I sadly think it will remain unknown.