In the dramatic conclusion to the Ravenmaster Trilogy, Anna Cooper must find the strength to face her greatest fear in Britain's darkest hour.

London, 1944. Britain's capital is back in the firing line. It has been several years since the Blitz ended, but now death is dropping from the skies once more. Has the tide of war turned again?

Anna Cooper survived the Blitz but she lost her mother and the people closest to her. Amid the flames and rubble, she discovered that everything she thought she knew about her family was a lie. She learned that nobody was prepared to take an orphaned girl seriously and she decided to fight back.

Now, Anna flies warplanes for the Air Transport Auxiliary but she knows it is not enough. Hitler is ready to unleash one final terrifying secret weapon, against which there is no defence. But Anna won't let that happen. If there is no defence, there is only one option: attack.