: Bruce and Alfred Pennyworth find a secret passageway behind the fireplace in Wayne Manor, leading to what will eventually become the Batcave .

often denotes the show's internal production or release code. 2122 typically indicates Season 1 , Episode 22 (the finale). hdtv signifies high-definition television quality.

: Oswald Cobblepot (Penguin) successfully maneuvers through the chaos to declare himself the "King of Gotham".

: The episode has a standard broadcast length of approximately 42–49 minutes . Gotham Episode 1.22 Recap - That Shelf