Trick or Treat Scooby-Doo!

After capturing the leader of a costume-based crime syndicate named Coco Diablo, the members of Mystery Inc. hope to finally relax. However, their peace is interrupted when ghostly doubles of the group and their former enemies appear in Coolsville during Halloween. To protect the holiday and identify the person behind these imposters, the team must work together, potentially teaming up with the imprisoned Coco Diablo.

This animated adventure and comedy was directed by Audie Harrison. The voice cast features Frank Welker as Scooby-Doo, Fred, Rudy, and Nefario, alongside Grey DeLisle as Daphne and several other characters. Matthew Lillard voices Shaggy and Captain Cutler, while Kate Micucci provides the voice for Velma. Myrna Velasco appears as Coco Diablo, and Dee Bradley Baker voices characters including Mr. Wickles and Cat Man. The film was produced by Warner Bros. Animation and Hanna-Barbera Productions in the United States.

The movie has a runtime of 77 minutes. Audiences have given it mixed to positive ratings, with a score of 5.8/10 on IMDb based on 2,600 votes and a higher rating of 6.9/10 on TMDB from 218 votes.