Acquanetta

An insane scientist doing experimentation in glandular research becomes obsessed with transforming a female gorilla into a human...even though it costs human life.

When an artist is blinded, his fiancée's father offers an operation to restore his sight. When the benefactor suddenly dies, the artist becomes a suspect.

Paula the ape woman (Acquanetta) is alive and well, and running around a creepy old sanitarium run by the kindly Dr. Fletcher (J. Carrol Naish), also reverting to her true gorilla form every once in a while to kill somebody.