In this film from 1936, Anna Lee plays Dr. Clare Wyatt, who leaves behind her reporter boyfriend (John Loder) so that she can accept a job working with the eccentric scientist, Dr. Laurience (Boris Karloff).  Dr. Laurience lives in a spooky mansion with a sarcastic, wheelchair-bound assistant (Donald Calthorp).  It turns out that Dr. Laurience believes that he has discovered how people can switch minds and bodies.  The scientific community ridicules Dr. Laurience but soon, Laurience is putting his theories to the test.  Dr. Laurience finds himself falling in love with Clare but he knows that she’s in love with her suspicious boyfriend.  What if Dr. Laurience changed his mind?

This is an entertaining British production, featuring almost the entire cast playing more than one role as various minds are moved into different bodies.  That said, the film is dominated by the great Boris Karloff, who gives one of his most enjoyable performances as the mad Dr. Laurience.  Though Karloff became a star playing the Monster, he always seemed happier whenever he got to play the mad scientist.