Colonel March is in Paris to speak at the Annual Convention of the Society for Interplanatary Communication. After the presentation, one of the attendees remarks of March "Such an imagination and grasp of the problem - and for an Englishman, that's remarkable." Dr. Charles Hodek, an imminent expert in "hibernation theory" is also impressed and invites March to visit him at his château. Hodek has built a large pressure chamber to test his suspended animation theories and shows March what he believes to be radio wave communications, heightened by telegraphic power, from another planet. Philip Rosea, the lover of Hodek's wife, Annette, volunteers to be the subject in Hodek's suspended animation test. In spite of an elaborate alarm system, something goes wrong. March and Hodek rush into the chamber and seeing Philip unconscious, Hodek says that he'll have to check his blood pressure. March tells him "I don't think he'll have much blood pressure. He's dead." In the series, March often makes such black humor remarks upon finding a body. Even with all the pseudo scientific mumbo jumbo, the episode is still entertaining.