When Lydia and Emily find out what Matthew has done, they ask for help from Seb and Charlie to get Matthew back. They soon discover that Matthew is not a real person. They are forced to hatch numerous plots to find who Matthew really is, or if he even exists. By the clever use of glitter in a letter, they discover that Matthew Dunlop's true identity is Paul Wilson, the form captain and star of the school drama club. He is also, coincidentally, the boyfriend of the girl Charlie likes, Christina. The five (Emily, Charlie, Lydia, Seb and an initially reluctant Cassie) work together for revenge. Seb beats Paul up after Paul humorously tells him the story of his deception. Seb is set to be going to an art show the very next morning, and Paul threatens to tell the principal in an attempt to penalize Seb. But just when this is about to happen, Lydia, Emily and Cassie pretend to be casting agents and call Paul, telling him he has a job and needs to come to a certain time and location to get his makeup done (Paul is an aspiring actor) and practice lines for a last-minute filming rehearsal. The girls' prank is successfully pulled off and Paul realizes at the end that it was all an elaborate plan to stop him from telling the school principal. During all this time Emily and Charlie seem to show signs that they like each other. Meanwhile, Lydia and Sebastian kiss on a secret assignment.