The House Of Eldritch Horrors Presents "The Atomic Brain" (3 of 4) movie

An elderly woman uses her vast fortune to convince an eccentric yet brilliant scientist to transplant her brain into a new, youthful body. The bodies are provided by three immigrant young women who are hired to be servants. The old woman then chooses which of the girls she finds most beautiful, and sets about replacing the young woman's brain with her own.