Scientist Martin Fellmann is tormented by an irrational fear of knives and the irresistible compulsion to murder his wife. Driven to the brink of madness by fantastic nightmares, he encounters a psychoanalyst who offers to treat the perplexing malady.
Werner Krauß
as Martin Fellman
Ruth Weyher
as Seine frau
Ilka Grüning
as Die Mutter
Jack Trevor
as Erich
Lili Damita
as (uncredited)
Pavel Pavlov
as Dr. Orth (as Pawel Pawloff)
Hertha von Walther
as Fellmans Assistentin
Renate Brausewetter
as Dienstmaedchen
Colin Ross
as Kriminalkommissar
