Complex sentence: Bruce visits Vicki at her apartment, prepared to tell her about his alter-ego, but the Joker interrupts their meeting, asking Bruce, "(Have you) Ever danced with the devil by the pale moonlight...?" before shooting him.
Split into simpler sentences: Bruce visits Vicki at her apartment, prepared to tell her about his alter-ego. The Joker interrupts their meeting, asking Bruce, "(Have you) Ever danced with the devil by the pale moonlight?" before shooting him.