Villain(s)  Man-beast

Actor(s):  Marjorie Eaton, Frank Gerstle, Frank Fowler, Erika Peters

Brief Description  The Atomic Brain (originally titled Monstrosity) is a low-budget 1964 sci-fi horror cult film directed by Joseph V. Mascelli. It follows an elderly, wealthy woman who hires a rogue scientist to perform a bizarre atomic brain transplant so she can live forever in a young body.

Plot:
Hetty March uses her vast fortune to fund Dr. Frank's laboratory in her mansion's basement, which is powered by an atomic reactor. She is obsessed with transferring her brain into a youthful, beautiful body so she can live forever. Mrs. March lures three young immigrant women to her estate under the guise of hiring them as domestic servants: Anita from Mexico, Bea from England, and Nina from Austria. Once inside, the women find the phone lines cut and realize they are prisoners. Mrs. March inspects the women to pick her ideal physical vessel. Deeming Anita unworthy for the main procedure, Dr. Frank uses atomic radiation to transplant a cat's brain into Anita's body as a test, causing her to behave like a feline. The experiments go awry as the domestic workers try to escape. In a bizarre twist of cosmic justice, Mrs. March's brain ends up transplanted into a cat, while the lab is destroyed and one young woman survives to inherit her estate.