The Lost Twin - Scarlet and Ivy by Sophie Cleverly When shy Ivy's trouble making twin Scarlet vanishes from Rookwood boarding school, Ivy is invited to "take her place." But when Ivy arrives, she discovers the school's true intention; she has to pretend to be Scarlet. She must think like Scarlet, act like Scarlet, become Scarlet. What on earth happened to the real Scarlet, and why is the school trying to keep it a secret? Luckily for Ivy, Scarlet isn't about to disappear without a fight.