Dr. Laurence, a once-respectable scientist, begins to research the origin of the mind and the soul. The science community rejects him, and he risks losing everything for which he has worked. He begins to use his discoveries to save his research and further his own causes, thereby becoming... a Mad Scientist, almost unstoppable...
Boris Karloff
as Dr. Laurence
Anna Lee
as Dr. Clare Wyatt
John Loder
as Dick Haslewood
Frank Cellier
as Lord Haslewood
Donald Calthrop
as Clayton
Cecil Parker
as Dr. Gratton
Lyn Harding
as Prof. Holloway
Clive Morton
as Journalist
D.J. Williams
as Landlord
