The first trailer for Warner Bros. Animation, DC and Warner Bros. Home Entertainment's Batman: The Long Halloween, Part One has arrived.

The trailer begins with Batman and Harvey Dent in front of a massive pile of money, with a coin flip foreshadowing the latter's eventual descent into villainy. From there, we see Batman embark on a mission to find a killer who only commits crimes on holidays. This puts him into conflict with a number of his rogues, including The Joker, Calendar Man and Solomon Grundy.

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Published in 1996, Jeph Loeb and Tim Sale's Batman: The Long Halloween is a 13-part series that takes place in Batman's early days and follows the Dark Knight as he attempts to apprehend mysterious a serial killer who murders people on holidays, once per month. In addition to the series re-introducing the villain of Calendar Man -- who knows the Holiday killer's identity, but won't tell Batman -- The Long Halloween also chronicles Harvey Dent's transformation into the villain Two-Face. Throughout the book's 13 issues, Batman also has run-ins with the likes of Catwoman, Joker, Scarecrow, Mad Hatter, Poison Ivy and The Riddler, among others. Chronologically, The Long Halloween takes place after the events of Frank Miller and David Mazzucchelli's Batman: Year One.

The animated adaption is being split into two parts, with the first earning a PG-13 rating and the latter an R.

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Inspired by the iconic mid-1990s DC story from Jeph Loeb and Tim Sale, Batman: The Long Halloween, Part One begins as a brutal murder on Halloween prompts Gotham's young vigilante, the Batman, to form a pact with the city's only two uncorrupt lawmen (Police Captain James Gordan and District Attorney Harvey Dent) in order to take down The Roman, head of the notorious and powerful Falcone Crime Family. But when more deaths occur on Thanksgiving and Christmas, it becomes clear that, instead of ordinary gang violence, they're also dealing with a serial killer - the identity of whom, with each conflicting clue, grows harder to discern. Few cases have ever tested the wits of the World's Greatest Detective like the mystery behind the Holiday Killer.

Batman: The Long Halloween, Part One stars Jensen Ackles as Bruce Wayne/Batman, Naya Rivera as Catwoman/Selina Kyle, Josh Duhamel as Harvey Dent, Billy Burke as James Gordon, Titus Welliver as Carmine Falcone, David Dastmalchian as Calendar Man, Troy Baker as Joker, Amy Landecker as Barbara Gordon, Julie Nathanson as Gilda Dent, Jack Quaid as Alberto, Fred Tatasciore as Solomon Grundy and Alastair Duncan as Alfred, along with Frances Callier, Greg Chun, Gary Leroi Gray and Jim Pirri. The film is expected to arrive this spring or summer.

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Source: YouTube