A Game of Cat and Mouse

Catwoman steals the Crown Jewels of King Charles the Great — along with the castle they are stored in! The Joker decides he'd like the Jewels for himself. As a diversion, he warns Catwoman of the Dynamic Duo's approach, allowing her to seal them inside her mountain cave under a landslide!

Some voices:
Batman: Olan Soulé
Robin: Casey Kasem
Catwoman: Jane Webb
Narrator & Joker: Ted Knight (2 years BEFORE "Mary Tyler Moore")