It's 1830, in an alternate Britain where the "scientific" principles of magic were discovered 60 years previously, allowing the British to win the American War of Independence. Although Britain is now supreme among the Great Powers, the gulf between rich and poor in the Empire has widened and unrest is growing every day. Master Thomas, the King's Royal Sorcerer, is ageing and must find a successor to lead the Royal Sorcerers Corps. Most magicians can possess only one of the panoply of known magical powers, but Thomas needs to find a new Master of all the powers. 

Emily is a teenage girl pulled from our world into a world of magic and mystery by a necromancer who intends to sacrifice her to the dark gods. Rescued in the nick of time by an enigmatic sorcerer, she discovers that she possesses magical powers and must go to Whitehall School to learn how to master them. There, she learns that the locals believe she is a "Child of Destiny" - someone whose choices might save or damn their world, a title that earns her both friends and enemies.

In The Promised Lie, the first book of the new series, five years have passed since the earth-shattering events of Bookworm IV. The Golden City has fallen. The Grand Sorcerer and Court Wizards are dead. The Empire they ruled is nothing more than a memory, a golden age lost in the civil wars as kings and princes battle for supremacy. And only a handful of trained magicians remain alive. 

Elaine is an orphan girl who has grown up in a world where magical ability brings power. Her limited talent was enough to ensure a magical training, but she's very inexperienced and was lucky to get a position working in the Great Library. Now, the Grand Sorcerer - the most powerful magician of them all - is dying, although initially that makes little difference to Elaine; she certainly doesn't have the power to compete for higher status in the Golden City. But all that changes when she triggers a magical trap....

Caitlyn Aguirre should have been a magician. Her family certainly expected her to be a magician. But by the time she reached her 12th birthday, Caitlyn hadn't even managed to cast a single spell! In desperation, her parents send her - and her magical sisters - to Jude's Sorcerous Academy, her last best chance to discover her powers. But as she struggles to survive her classes without a single spell to her name, Caitlyn starts to uncover an ancient mystery that may prove the key to her true powers....