Josh Schwartz, creator of TV's The OC and Gossip Girl, wreaks havoc with his directorial debut - a gross, sprawling and barely credible teen comedy. Victoria Justice stars as a gorgeous but (unbelievably) unpopular geek who, after getting an invitation to the party of Halloween night, finds herself saddled with her disgusting little brother (Jackson Nicoll) when their recently widowed mother (Chelsea Handler) goes out to have a good time. The boy promptly goes missing during the night of trick-or-treating, so Justice ropes in social-climbing pal Jane Levy and nerdy buddies Thomas Mann and Osric Chao to help her track him down. Some nice performances (particularly from Nicoll as the emotionally damaged youngster) almost rescue this good-looking film, which fails miserably on all other counts. The ridiculous, grotesque scenes seem designed to offend - and that's the one area where the film truly succeeds.