From Book 1: After her mother is killed in the Blitz and her father in the North Sea, 12-year-old Anna Cooper is sent to live with an uncle she has never met – the Ravenmaster at the Tower of London. Amid the Tower's old secrets and hidden ghosts, the ravens begin to disappear and Anna must brave the war-torn city to find them. With Nazi forces massing on the other side of the Channel, the fate of Britain might be at stake, for an ancient legend foretells that Britain will fall if the ravens ever leave the Tower.

London, 1942: the Blitz is over but the war rages on. With the country still fighting for its existence, a young girl takes to the skies... After her mother was killed in an air raid, Anna Cooper was sent to live with her uncle, the Ravenmaster at the Tower of London. Now, he too is dead. His dying wish was for Anna to be the next Ravenmaster, keeper of the birds who, according to legend, guard the fate of the kingdom. But the Tower authorities won't stand for a female Ravenmaster, let alone one who is not yet sixteen years old. Denied her destiny, Anna is desperate to escape the Tower and join the war effort. She bluffs her way into the glamorous - and dangerous - world of the Women's Auxiliary Air Force. But no matter how high she flies, Anna can't escape her past... nor the secret that it conceals. A secret that could change the course of the war.

London, 1944. War is raging across Europe and Hitler's terrifying secret weapons, V1 rockets, transform life into a nightmare. After her mother was killed in an air raid, Anna Cooper was sent to live with her uncle, the Ravenmaster at the Tower of London. Now he too is dead, and Anna must seek help from her estranged father to discover her only chance of fighting back. Commandeering a Spitfire, Anna leads a crew of fearless pilots to intercept the deadly rockets. But Hitler has one final secret weapon, against which there is no defense. At the eve of a devastasting war, Anna must confront the ghosts of her past and do what she can to survive in a world forever changed.