Demon II by Samantha Lee
Wesley's not looking forward to his week at camp. He's no good at sports and he's never been Mr Popular. So when he's put in a cabin with three morons who are out to get him, he's not sure how he'll survive. But then he finds the dreamcatcher and meets Louella. Louella promises him that together they'll take care of the bullies once and for all, but there's a price...