The celebration of all things spooky started Friday at both Disneyland and California Adventure. The frightening festivities will last through Oct. 31.
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Favorites like Space Mountain: Ghost Galaxy and Haunted Mansion Holiday are back.
Also new at California Adventure -- a character encounter with Vampirina.
Riders will also help save Groot from crazed creatures on the Guardians of the Galaxy - Monsters after Dark.
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