Two astronomers working together, seek a tenth planet. The senior fears the junior might have found it and is jealous. They are also both interested in Norma, who works with them. When, in the course of a fight between the two men, the senior scientist falls dead - the question is was he killed by the other or not. Norma's brother, a police detective has to solve the case! Leslie Nielsen, Frank Albertson amd Horace MacMahon star.