Theirs is a world of opposites. The privileged live in sky manors held aloft by a secretive magic known only as the Mysteries. Below, the earthbound poor are forced into factory work to maintain the engine of commerce. Only the wealthy can afford to learn the Mysteries, and they use their knowledge to further lock their hold on society. Cettie Pratt is a waif doomed to the world below, until an admiral attempts to adopt her. But in her new home in the clouds, not everyone treats her as one of the family.

Saiya Buchanan is a wraith, able to detach her shadow from her body and send it off to do her bidding. But, unlike most of her kin, Saiya doesn't deal in death. Instead, she trades secrets - and in the goblin besieged city of Stirling in Scotland, they're a highly prized commodity. It might just be, however, that the goblins have been hiding the greatest secret of them all. When Gabriel de Florinville, a Dark Elf, is sent as royal envoy into Stirling and takes her prisoner, Saiya is not only going to uncover the sinister truth.

In a stand-alone series set in the world of Muirwood, eighteen-year-old Maia is the exiled princess of Comoros and heir to the throne. As a result of her father's ceaseless need for authority, she was left disinherited and forced to live as a servant in her enemy's home. When the king invites chaos into the land by expelling the magical order known as the Dochte Mandar, Maia finds herself on a perilous quest to save her people. To survive, she must use magic she has learned in secret - despite the fact that women are forbidden to control it.

For three years, Sera Fitzempress has been a pawn in a gilded prison. Disgraced and exiled from society, she has been isolated from the downtrodden she’s determined to liberate. Cettie Pratt has grown into an independent young woman, although she continues to be tested by the high society of the clouds. Advancing in the magic of the Mysteries, Cettie is also a useful tool of defense during turbulent times. The fog of war is drawing in, and with it comes a startling new enemy who may unravel secrets that both women would prefer stay hidden. 

Buried in the catacombs beneath the fortress of Landmoor lies the Silverkin, an ancient talisman that can overcome any Forbidden magic. Thealos Quickfellow has the right to claim the Silverkin but knows little about the deadly consequences befalling those who wield it. Before he can lay claim to it, he must first slip beyond the web of Sorian who have beset Landmoor and battle among themselves for supremacy. On his journey, Thealos will learn personally of the sacrifices required to become a Sleepwalker and how to use the Silverkin to save his people. But will using it destroy him?