Katie (Megan Prescott) won’t leave the house. Fortunately, Emily (Kathryn Prescott) is able to disguise herself as her sister, and sits an exam for her, facilitating the self-imposed house-arrest. Emily and Naomi (Lily Loveless) get closer, but when Emily asks Naomi to accompany her to the college ball, she says no – breaking Emily’s fragile heart. Against her better judgement, and under duress, Emily agrees to partner Katie to the ball, and they plan their outfits together. Out shopping, though, Katie sees a way of regaining her hard-sought status at college. When Freddie inadvertently drops the bombshell about Emily and JJ, Katie hatches a plan – making her sister the ultimate victim. Katie’s scheming results in the mother of all show-downs. But she’s the one who has to face her fears and accept some hard truths – she’s not in control any more.