A husband and wife detective team takes on the search for a missing inventor and almost get killed for their efforts.
Members of a municipal band, Stanley and Oliver seem to be always following someone else's lead, rather than that of the temperamental conductor.
In 19th century Paris, a maniac abducts young women and injects them with ape blood in an attempt to prove ape-human kinship but constantly meets failure as the abducted women die.
