Robin is left hanging at the end of this story while Batman looks for him. (edit) This is one of the only first-parter episodes in which the oft-repeated shot of Batman and Robin running into city hall does not appear. Instead, we see one of Bookworm's croonies watching City Hall from around the corner.
(edit) The 20,000-decibel super-amplified sound effect of Batman's Batcommunicator sound effect was previously heard on Season 1 episode Better Luck Next Time. (edit) The outside shot of the Wayne Memorial Clock Tower is actually Big Ben (London) at night. (edit) Ironically, these epsiodes appeared during National Library Week. (edit) Jerry Lewis was the first cameo Gothamite in this episode during a Batclimb. (edit) Before bringing Lydia Limpet to The Batcave, Batman uses of a can of Bat-gas for the first time. A can of Bat-awake won't be used until The Riddler's False Notion. (edit)

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