Batman: The Doom That Came to Gotham (2023)

Directed by Sam Liu and Christopher Berkeley and featuring the voices of David Giuntoli, Tati Gabrielle and Christopher Gorham, Batman: The Doom That Came to Gotham reimagines Bruce Wayne as a 1920s explorer who returns to Gotham after accidentally awakening an ancient evil. Batman is forced to confront occult rituals, monstrous transformations and Lovecraftian supernatural forces that challenge his rational worldview. The film adapts Mike Mignola and Richard Pace’s Elseworlds comic-book story.

Från IMDB:
An ancient evil awakens and only Bruce Wayne can save 1920s Gotham City.