When she is turned into a super-modelesque super-fighting machine, Tally, a former ugly, is ordered to keep the uglies down and the pretties stupid in a carefully engineered world of perfection where she refuses to play by the rules.

In a world that is rapidly descending into chaos, Frey and Rafi are twin sisters, but few people know of Frey's existence, because she has been raised to be her sister's body double and lethal bodyguard, while Rafi has been raised to further the family's political power--but when their father sends Frey in her sister's place as collateral in a tricky deal, Col, the son of a rival leader, gets close enough to begin to suspect something, and Frey must...

Raised to be her twin sister Rafia's body double and bodyguard, but now with new face and body Frey and her lover Col are determined to return to Shreve to rescue Boss X, a friend and ally in the rebellion of the free cities against people like Frey's father, ruthless ruler of Shreve; but Frey is troubled by things even beyond the dangers of her mission--confusion over her own identity, guilt over having killed her brother (even if he was trying to...

In an alternate 1914 Europe, fifteen-year-old Austrian Prince Alek, on the run from the Clanker Powers who are attempting to take over the globe using mechanical machinery, forms an uneasy alliance with Deryn who, disguised as a boy to join the British Air Service, is learning to fly genetically-engineered beasts.

Continues the story of Austrian Prince Alek who, in an alternate 1914 Europe, eludes the Germans by traveling in the Leviathan to Constantinople, where he faces a whole new kind of genetically-engineered warships.