Justice League Dark is a 2017 American adult animated science fantasy superhero film produced by Warner Bros.

Unlike most installments in the DC Animated Universe Movies series, Justice League Dark features an original premise.

The film stars Matt Ryan as John Constantine, Camilla Luddington as Zatanna and Jason O'Mara as Batman.

Five days prior, occult detective John Constantine and Jason Blood engage the Demons Three in a high-stakes poker game.

He reveals that, centuries ago, the sorcerer Destiny created the Dreamstone in an attempt to overthrow Camelot, forcing people to see their worst nightmares and feeding off their torment.

Blood was mortally injured in the battle, prompting Merlin to summon Etrigan to defeat Destiny, whose soul was imprisoned in the Dreamstone.

Ritchie awakens and is revealed to have the other piece of the Dreamstone, which has been keeping his cancer in remission; he takes over the House and forces Black Orchid to burn her own body to ash.

The two return to the reconstructed House of Mystery to discuss their League applications, and Deadman joins the restored Black Orchid as her soulmate.

Justice League Dark is directed by Jay Oliva, and stars the voices of Matt Ryan, Jason O'Mara, Camilla Luddington, Nicholas Turturro, and Ray Chase.

Felix Vasquez Jr. of Cinema Craze also praised the film, calling it a "fun celebration of supernatural elements in DC comics".

The DC Showcase short Constantine: The House of Mystery was released in May 2022 and is a narrative sequel to Justice League Dark: Apokolips War.