Here you can watch online Justice League Action episode 18 season 1 for free and all the others episodes of Justice League Action. Also you can watch Justice League Action episode 18 – Trick or Threat online in HD or full screen.
In this Justice League Action season 1 episode 18 you can watch how Cain The Caretaker tells the audience a Halloween story about the House of Mystery, where Batman, Zatanna, Constantine, and Doctor Fate are turned into 10-year-olds by Klarion the Witch Boy. Now, the 10-year-old Justice League must find a way to defeat Klarion, turn them back to normal, and escape the House of Mystery before it disappears by midnight.
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