The boss of a power company (Douglas Dumbrille) is found dead a few days after ruining some of his investors. Inspector Queen (Charlie Grapewin) is investigating the case, of course his novelist son Ellery (Ralph Bellamy) and his assistant Nikki Porter (Margaret Lindsey) also gets involved in the case!
The case is complicated however, as the victim had made many enemies. Even the son Walter (John Beal) comes under suspicion. However, does the trained monkey of Carlotta (Spring Bylington) and her crooked lover (Sidney Blackmer) have something to do with it? Or is the murderer someone else?
This is a fun crime B-movie romp, with the usual red herrings, comedic asides and banter. The actual crime itself is pretty ingenious. Bellamy and Lindsay were a great double act who often appeared together.