There is a neighbourhood burglar on the loose, and Morticia has reason to believe it could be Gomez. Morticia decides to probe his subconscious mind for a key to his criminality after she and Uncle Fester discover loot hidden in the storeroom.

Gomez plays host to a family friend and his daughter Consuella. Morticia's hospitality changes to horror and shock when Consuella, believing Morticia to be Gomez's sister, reveals that she has been promised in marriage to Gomez.