"...the Vampires should have been able to kill off our hero, intrepid reporter Philippe Guerande, ten times over. They're ruthless with their other opponents, but with Guerande they try to be clever. How is it that the Vampires have the ability to gas party guests & destroy ships at sea, but they can't manage the simple task of getting their own code book back from his apartment?".
In its favor, the camera moves from room to room, there's lots of parallel cutting, and two characters break the fourth wall. A prototype serial, which uses all the conventions except for cliffhangers, 15 years before anyone else.