This is one of Dario Argento’s best from the 80’s. It’s wrongly mistaken for Argento’s Third Mother movie (the other two being Suspiria and Inferno), but it only uses the title of The Third Mother. Anthony (The Finder of Lost Loves) Franciosa stars as an author whose latest book Tenebrae inspires a serial killer to start offing people close to him. Throats are slashed with a straight razor and people have pages of the book shoved into their mouths. There’s also a Doberman attack and a particularly brutal axe murder. John (Battle Beyond the Stars) Saxon co-stars as his scheming agent and the director’s wife Daria (Deep Red) Nicolodi (whose voice was dubbed by Theresa Russell) also appears. The excellent score is from the former members of Goblin. Franciosa and Saxon were also in Zombie Death House together.