Scotland Yard is after a homicidal maniac called The Blue Hand, which is what he uses to kill his victims.

"Fear will grip you by the throat when the evil hand KILLS...KILLS...KILLS"

Credits

Alfred VohrerDirector

Harald LeipnitzInspektor Craig

Klaus KinskiDave Emerson / Richard Emerson

Carl LangeDr. Albert Mangrove

Ilse SteppatLady Emerson