Catherine Fisher

To free herself from an upcoming arranged marriage, Claudia, the daughter of the Warden of Incarceron, a futuristic prison with a mind of its own, decides to help a young prisoner escape.

Sixteen-year-old Raffi, Master Galen, and a mysterious traveler, Carys, enter the ruined city of Tasceron seeking a relic that may save the world, while evading the Watch, a brutal organization opposed to the Order to which Raffi and Galen belong.

Sixteen-year-old Raffi and Master Galen continue to evade the Watch as they seek the Coronet, a potent ancient relic that could be their only hope for defeating the power that is destroying Anara.

It is a life-changing deal—and it will end your life as you know it.
 
Sarah Trevelyan would give anything to regain the power and wealth her family has lost, so she makes a bargain with Azrael, Lord of Darkwater Hall. He will give her everything she needs to restore the Trevelyan name, and one hundred years to do it—in exchange for her soul. Fast-forward a hundred years to Tom, who dreams of attending Darkwater Hall...

"Orphan Seren Rhys is on her way to a new life at the remote country mansion of Plas-y-Fran when she is given a package by a stranger late at night in an empty train station. The package contains a crotchety, mechanical talking crow, which Seren reluctantly brings to her new home. But when she gets there, the happy Christmas she had hoped for turns out to be an illusion-- the young son of the house, Tomos, has been missing for almost a year, rumored...

"While Jake and Sarah are pulled through the Obsidian Mirror, landing in the violent, unpredictable time of the French Revolution, Oberon Venn must decide between staying mortal or losing his soul in the faerie realm"--

After she is chosen to be "Bearer-of-the-god," Mirany questions the established order and sets out, along with a musician and a scribe, to find the legitimate heir of the religious leader known as the Archon.

After rescuing Tomas from enchantment, orphan Seren Rhys is enjoying her first summer at Plas-y-Fran. But as autumn arrives, it brings with it a mysterious new governess who seems intent on drawing Tomas away from Seren and his family. Dangerous figures from a bewitched toy carousel stalk the house and, fearing the worst, Seren calls on the clockwork crow to help her. But can he reach her in time, and will Tomas be able to escape the magical creatures...