What Did Lou Do? Finn Doesn't Understand Any of It

Lou realizes she doesn't want Finn to go home after all. She comes up with a new plan to get him to stay. Will she succeed? There is huge confusion surrounding the vape. Xavi put it under Boaz’s pillow, but why does Jesper confess to doing it? And will this get Jesper into trouble with his father? Gwenn is the only one who saw Xavi walking around with the vape. Will she ensure that Boaz finds out the truth?