B:TB&tB episode 15 "Trials of the Demon!" Directed by Micheal Chang.
In this episode we have Batman in 19th century London teaming up with the Demon Etrigan and Sherlock Holmes to battle Jim Craddock, the future Gentleman Ghost. We also get an appearance of Batman in the "Gotham by Gaslight" costume.
"Batman: The Brave and the Bold" ™Warner Bros. Animation.