For identical twins, Daisy and Violet are about as unlike as two peas from the same pod can be. Except in one respect u they both have a gift, a special kind of intuition that lets them see the secrets other people hide. But growing up different from everyone else isn't necessarily any easier when you have someone to share it with, and as the sisters get older and take their opposite paths into adult life, the bond of twin-hood is stretched further and further - until the day when Violet does something that threatens to shatter it completely.