A murder is committed at the Forest Park Planetarium during a lecture by the celebrated Astronomer, Professor Ernst Einfeld (Lee Kohlmar). The fatal shot is fired in semi-darkness while a distinguished audience observes the stars projected on the dome above them. A hardboiled homicide detective (Russell Hopton) trades verbal jabs with a wisecracking gal reporter (Lola Lane) as they attempt to unravel the mysterious killing. The investigation uncovers shady suspects,ex-cons, eccentric scientists, illegal aliens, goofy gumshoes, surprising revelations, switched identities and death threats before the shocking conclusion.