Book excerpt: Surviving Sam is Pagan Riddler's story. It begins three years after her twin brother, Sam, dies in an avalanche that roars down the mountain they are climbing together. Now Pagan is in her final year of high school and struggling to come out from under the shadow of Sam's death. She has seen a string of doctors to repair her body and fix her deep depression, but she still wakes up every morning longing for Sam to be alive. Soon life becomes complicated again: her parents might be splitting up, her friends are keeping big secrets from her, and as graudation looms she needs to decide what to do with the rest of her life. Then comes the most difficult blow of all: Sam's body is found at last, and Pagan must accept that her brother is really and truly dead.