A strangler is loose on a British estate, and he not only strangles his victims but brands an "M" onto their foreheads before he decapitates them.
The countess is married, and the ghosts are still in the Spessart. Her husband becomes an astronaut and the story involved time travelling and space travelling starts.
The spirit of the evil Dr. Mabuse takes over the body of a famous professor. The professor/Dr. Mabuse then begins a new crime wave that terrorizes the city.
