Starting with this episode, second (and third) part episodes opened with the cliffhanger scenes that ended the previous episode, with the narration giving a "When last we left..." recap. Previously the concluding half episodes began with recaps showing multiple scenes from the story's first part.
First appearance of Alfred's "Alfcycle".
Egbert is played by Alan Napier (Alfred the butler)
Despite being part of the episode, Chief O'hara has no lines.