Fred Gwynne, once again, is terrific. The plot & dialogue of the story would've been good for a post-war film like in the 1940's. In ACT 1, Dr. William Carstairs (played by Fred Gwynne) searches for a man of physics, but gets captured, attacked and threatened by his new enemies. In ACT 2, the antagonist Kellner (played by Court Benson) gives Inspector Mueller (played by Earl Hammond) a made up story the our protagonist wasn't being "cooperative". In ACT 3, Carstairs finally meets his mystery man, but leaves at the nick of time when things go from bad to worse. I won't give away the ending, but I will say, what goes around comes around. 