Gyre hasn't seen his beloved sister since their parents sold her to the mysterious Twilight Order. Now, 12 years after her disappearance, Gyre's sole focus is revenge, and he's willing to risk anything and anyone to claim enough power to destroy the Order. Chasing rumors of a fabled city protecting a powerful artifact, Gyre comes face-to-face with his lost sister. But she isn't who she once was.

The Empire of the Wolf simmers with unrest. Rebels, heretics, and powerful patricians all challenge the power of the Imperial throne. Only the Order of Justices stands in the way of chaos. Sir Konrad Vonvalt is the most feared Justice of all, upholding the law by way of his sharp mind, arcane powers, and skill as a swordsman. At his side stands Helena Sedanka, his talented protégé, orphaned by the wars that forged the Empire.

Ferius Parfax has a simple plan: Kill every last inhabitant of the spell-gifted nation that destroyed her people, starting with the man who murdered her parents. Killing mages is a difficult and dangerous business, of course, but when she meets the inimitable and extraordinary Durrall Brown, she discovers that physical strength is not the only way to defeat evil of all kinds. So Ferius undertakes to study the ways of the Argosi: the loosely-knit tribe of tricksters known for getting the better of even the most powerful of spellcasters.

The Tower of Babel is the greatest marvel in the world. Immense as a mountain, the ancient Tower holds unnumbered ringdoms, warring and peaceful, stacked one on the other like the layers of a cake. It is a world of geniuses and tyrants, of airships and steam engines, of unusual animals and mysterious machines. Soon after arriving for his honeymoon at the Tower, the mild-mannered headmaster of a small village school, Thomas Senlin, gets separated from his wife, Marya, in the overwhelming swarm of tourists, residents, and miscreants.

Myfanwy Thomas awakes in a London park surrounded by dead bodies. With her memory gone, her only hope of survival is to trust the instructions left in her pocket by her former self. She quickly learns that she is a Rook, a high-level operative in a secret agency that protects the world from supernatural threats. But there is a mole inside the organization - and this person wants her dead.