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.

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...

Upon moving to Bixby, Oklahoma, fifteen-year-old Jessica Day learns that she is one of a group of people who have special abilities that help them fight ancient creatures living in an hour hidden at midnight; creatures that seem determined to destroy Jess.

"Frey has spent her life in a family of deceivers, a stand-in for her sister, manipulated at her father's command. Free from them at last, she is finding her own voice -- and using it to question everything her family stood for. Tally was once the most famous rebel in the world. But for over a decade, she's kept to the shadows, allowing her myth to grow even as she receded. Now she sees that the revolution she led has not created a stable world. Freedom,...

In alternating chapters, eighteen-year-old Darcy Patel navigates the New York City publishing world and Lizzie, the heroine of Darcy's novel, slips into the "Afterworld" to survive a terrorist attack and becomes a spirit guide, as both face many challenges and both fall in love.

As they continue to battle evil creatures living in an hour hidden at midnight, Jessica and her new friends learn about Bixby, Oklahoma's shadowy past and uncover a deadly conspiracy that reaches beyond the secret hour.

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.

After the shocking conclusion to Swarm, the zeroes are scattered, on the run, and desperate. They're up against challenges from within and from the world around them, and one thing is certain an epic showdown is guaranteed. Accused of murdering Swarm, Bellwether is in a high-security prison; Flicker, Crash, Mob, and Scam are on the run as suspected domestic terrorists. Meanwhile an army of Zeroes is gathering in New Orleans, around Piper-- a new...

In this future-set novella by bestselling author Scott Westerfeld, Kieran Black lives in a "perfect" world. Disease and starvation have been eradicated, sleep is unnecessary, and it takes no time at all to go from the Bahamas to the moon. But now Kieran has to take Scarcity, a class about how people lived in the bad old days. And as if sitting through an hour of Scarcity every day wasn't depressing enough, it's final projects time. Each student must...

Rafi y Frey son el doble filo del mismo cuchillo. A Rafi la han criado para manipular y triunfar en toda clase de traiciones políticas. A Frey la han criado para matar y sacrificarse como su doble: al ser su gemela, es el blanco perfecto para cualquier francotirador que intente asesinar a la futura líder de Shreve. En especial si nadie conoce su existencia. Cuando su padre la envía a otra ciudad haciéndola pasar por Rafi como garantía de una...