Changes in the Mirza family have left both Tavi and Rex struggling to learn their new roles - and there's no room for error. Pretending to be his twin brother is more difficult than Tavi could have imagined, and family secrets threaten to tear him apart. Rex, protected and cared for in every way, has a far from peaceful life. Both have gained knowledge they didn't necessarily want to have, and now that it's been learned, they can't simply forget it...