Finally surgically transformed into a "pretty, " sixteen-year-old Tally, now gorgeous and programmed to think only happy thoughts, is plagued by tangled memories of living in the Smoke, a rebel colony of "ugly" runaways hiding from the Special Circumstances authorities.

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...

Alek and Deryn encounter obstacles on the last leg of their round-the-world quest to end World War I, reclaim Alek's throne as prince of Austria, and finally fall in love.

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.

As they celebrate the opening of their underground nightclub, the Zeroes, six teenagers with unique abilities, learn about the sinister power of Swarm, who uses a crowd's rage to kill--and who loves killing Zeroes.