The film's poster. Mostly Ghostly: Who Let the Ghosts Out? is a 2008 Halloween-themed ghost film. Summary When evil ghost Phears is on the loose, Max teams up with the ghosts of two children, Nicky and Tara to save Halloween from Phears. External links Mostly Ghostly: Who Let the Ghosts Out? on the Internet Movie database. See the article on Mostly Ghostly (Movie) on Fandom's Stine wiki. Oh no! This Halloween article has serious gaps or missing content for the topic. Did the monsters take it? How scary! Can you help fix it? You go that way, and I'll go this way... Retrieved from "https://halloween.fandom.com/wiki/Mostly_Ghostly:_Who_Let_the_Ghosts_Out%3F?oldid=26367" Categories: Article stubs Movies Community content is available under CC-BY-SA unless otherwise noted.