Desc: Die unsichtbaren Krallen des Dr. Mabuse: Directed by Harald Reinl. With Lex Barker, Karin Dor, Siegfried Lowitz, Rudolf Fernau. Evil mastermind Dr. Mabuse seeks Professor Erasmus' secret invention, a device that makes one invisible, but a murder in a revue theatre brings the German police and the FBI into the mix.