Who are you when your other half is gone Twelve-year-old Charli knows no other way of being than as a twin. But when her twin sister, Freya, succumbs to a lifelong battle with illness, Charli, consumed by grief, retreats into a tent in her backyard. Closed off from her family and friends, Charli risks losing not only her other half but her whole self. Without her twin, who is left to save Charli From Di Walker comes a story of loss, the importance of friendship and the transcendence of love, even if it is sometimes hard to see.