Continuity mistake: When Bruce goes to gear up to rescue the Ice Princess, there are visible footprints on the drawbridge that leads into the chamber where all the bat suits are kept. When he then steps back out in his Batman attire, the drawbridge is now clean of all prints. (00:00:24)
Batman Returns (1992)
1 video
Directed by: Tim Burton
Starring: Christopher Walken, Michelle Pfeiffer, Danny DeVito, Michael Keaton, Michael Gough
Visible crew/equipment: After Batman and Catwoman's mistletoe banter, a wire can be seen attached to his back as he glides off the rooftop. (01:20:15)
Selina Kyle: Honey, I'm home. Oh, I forgot. I'm not married.
Trivia: Annette Bening was cast as Catwoman but after becoming pregnant was replaced by Michelle Pfeiffer.
Answer: Nothing was stopping them. After Penguin's true nature was revealed, they most likely started searching the entire sewer system but couldn't find where his lair actually was so they had no choice but to give up.