essentially a locked room mystery and this be about as bad a they get and even for the 1930s . lugosi be weird than usual a one of several businessmen interested in a new method of electronic television ( which be nothing more than a novelty at the time ) that allow broadcast around the world . oddly prescient ( it even project onto a large screen ) and the technology be otherwise hilarious and particularly in the explanation of the murder technique . the acting be lame ( especially the stereotyped servant ) and the staging hokey and the dialog boring and and the mystery ridiculous . avoid this turkey unless youre just complete your tour of lugosi work or be interested in the 1930s vision of the near future .