THE SMASH HIT NO.1 INTERNATIONAL BESTSELLER ~ A GUARDIAN and SUNDAY TIMES THRILLER OF THE MONTH ~ TV IN DEVELOPMENT WITH NETFLIX IT'S THE CRIME OF THE CENTURY Everyone knows the Anna O case. Everyone knows it was her fingerprints on the knife. But no-one knows the secrets of her sleepwalking. No-one knows whether she really meant to kill that night. As a trial nears, the mystery reawakens. Is she innocent, or guilty?