Atom Age Vampire 1960 (aka...Seddok, l'erede di Satana

Atom Age Vampire (Italian: Seddok, l'erede di Satana) is a 1960 Italian horror film directed by Anton Giulio Majano. Shot in black-and-white, the film was produced by Elio Ippolito Mellino and stars Alberto Lupo, Susanne Loret, and Sergio Fantoni set in France. Despite there being no vampires in the film, it was released in the US as Atom Age Vampire in 1963 in an 87-minute version. It was further shortened for English language DVD release.
When a stripper (Susanne Loret) becomes disfigured in a car accident, a scientist (Dr. Levin, played by Alberto Lupo) develops a treatment to restore her beauty by injecting her with a special serum. While performing the procedure, however, he falls in love with her. As the treatment begins to fail, he determines to save her appearance, regardless of how many women he must kill for her sake.
Despite the implication of its American title, the film does not feature an actual vampire. The titular Seddok is the brilliant but deranged scientist Dr. Levin, mutated by a chemical formula created using radiation. Dr. Levin studied the effects of radiation on living tissue in post-Hiroshima Japan and made an imperfect and teratogenic serum, "Derma 25", which he later refined into the miraculous healing agent "Derma 28", which he uses to treat the heroine. When his supply of Derma 28 runs out, he realizes he must kill to obtain more, and injects himself with Derma 25 to become monstrous and remorseless, so that he may seek these victims without hesitation.
Because many of the murders take place near the docks where shiploads of Japanese refugees are arriving, and leave behind the victims' bodies with holes in the neck where Dr. Levin has extracted the glands, the refugees claim that a vampire (whom they call "Seddok", though this is not a Japanese name) is responsible for the attacks. During a meeting with police, a restored-to-humanity Dr. Levin speculates that the Hiroshima survivors' tales of a mutated killer are due to psychological strain from the radiation damage to their bodies. However, he also wonders aloud whether the "vampire" these witnesses describe might be a disturbed man wishing to be normal again.