Edited by Solomon on 3/14/2017, 8:58 am
Near the end of the very laudatory remarks, the reviewer writes "A movie that is more of a Horror Noir with Gothic elements than the stuff we associate with Jess Franco."
In the 60s there is a set of European black and whites that kept alive the higher contrast lighting, and these are sometimes in the horror vein. This film is a prime example.
I do not call a movie a horror movie unless it brings in the supernatural. For me that's a necessary but not sufficient condition. There's no supernatural in this one, at least in the 2/3 I've watched so far.
There's more of a sci-fi element. The doctor is after isolating and stimulating good and evil responses by specific areas of the brain and spine. Shades of Peter Cushing's work! A sci-fi movie typically explains its science, such as it is, and this one does so.
Compare "The Creature with the Atom Brain" (1955), a Curt Siodmak/Edward Cahn collaboration and sci-fi effort, which has a criminal working with a doctor to revive corpses and wire their brains to do their bidding like obedient zombies. Instead of blood, the doctor has invented a radium mixture that provides the requisite energy. After that, it's a matter of wiring the brain and something akin to galvanic responses. This picks up where several Karloff entries left off. But the photography, apart from the opening sequence, is mostly the flatter 50s style, whereas Franco goes all out here.
The story is one of obsessive revenge and murder in both these movies, but Franco's treatment is light-years more stylish than Cahn's.