c'è un fantasma nel castello (1941)

an amateur policeman is called by the owner of a castle that seems to be inhabited by a ghost so as to shed light on the disturbing affair. after a series of farcical situations, the policeman discovers that behind the 'ghost' there is a gang of forgers who settled in the basements of the manor who had devised the trick of this apparition in order to act undisturbed.