Mathilda Savitch : Fear doesn't come naturally to Mathilda Savitch. She prefers to look right at the things nobody else can bring themselves to mention: for example, the fact that her beloved older sister is dead, pushed in front of a train by a man who is still on the loose. Still, after a year of spying and provocations, she's no closer to the truth about her sister's death than the day it happened. When Mathilda finally cracks her email password, a secret life opens up, one that swiftly draws her into a world of clouded motives and strange emotion. Somewhere in it lies the key to waking her family up from their dream of grief. To cross into that underworld and see what her sister saw, she has to risk everything that matters to her.