Librarian Sylvia Ashe knows nothing about her past, having grown up without a father and a mother who refused to discuss him. When she stumbles upon a diary that suggests she's descended from magicians, she's skeptical. After all, magicians are special, and she's just an ordinary woman who loves books. She seeks answers from a member of the most prominent family of magicians, but she quickly learns that finding the truth won't be easy, especially when he turns out to be as artless as her, and more compelling and dangerous than books.

At 17, Claire Trevelyan, daughter of Viscount St. Ives, was expected to do nothing more than pour an elegant cup of tea, sew a fine seam, and catch a rich husband. Unfortunately, Claire's talents lie not in the ballroom, but in the chemistry lab, where things have a regrettable habit of blowing up. When her father gambles the estate on the combustion engine and loses, Claire finds herself down and out on the mean streets of London. But being a young woman of resources and intellect, she turns fortune on its head. It's not long before a new leader rises in the underworld, known only as the Lady of Devices...

Margrethe Amelia Linden (Daisy to her friends) is a young woman of gentle upbringing, some talent as a watercolorist, and firm opinions that often get her into trouble. Determined to find her missing father, in the summer of 1895 she sets out for the last place he was seen: the Wild West. It's a rude shock when her younger sister stows away on the airship - such behavior no doubt the result of her unsuitable friendship with Maggie Polgarth and the Carrick House set.

In 1819, France is surrounded by armies. With Russia in the north, the Karlsruhe Confederacy in the east, and a pirate kingdom in the south, Napoleon cannot break out, nor can the English Navy seem to break in. Europe teeters on the edge of a sword. Celeste Blanchard, daughter of the Emperor’s disgraced Air Minister, is running out of time to develop an airship that can carry his armies to England and restore her mother to glory. But on a desperate test flight, she is blown off course…and washes up, half drowned, on the shores of Cornwall, in the heart of enemy territory.

After the Final War, after the appearance of the Bug aliens and their enforced peace, Shining Smith is still alive, still doing business from the old scrapyard bequeathed to her by her father. But Shining is now something more than human. And the scrapyard is no longer just a scrapyard, but a place full of secrets. This life she has built, while empty, is predictable and safe. Until the only friend left from her previous life shows up, dead, in the back of a scrapped Tesla warplane. Clutched in her cold fingers is a note to Shining - warning her of a coming attack.