Cat thought the Hydra epidemic was over, but when new cases arise, she must team up with an enemy to fix the vaccine before the virus spirals out of control.

A girl, estimated to be sixteen, awakens with amnesia in the wreckage of a plane crash she should not have survived and taken into foster care, and the only clue to her identity is a mysterious boy who claims she was part of a top-secret science experiment.

In a future where genetic engineering has cured humanity of all diseases and defects but has also produced a virus that kills all females by age twenty and all males by the age twenty-five, teenaged Rhine escapes her forced marriage and journeys back to New York to find her twin brother.

The desert is no place for ocean-dwelling Kampii like Aluna and Hoku, especially now that Aluna has secretly started growing her tail.

"In a world that has barely survived an apocalypse that leaves it with pre-twentieth century technology, Lozen is a monster hunter for four tyrants who are holding her family hostage"--

Months after she has been healed from the Enemy Sickness that afflicted her in Trail of the Dead, Lozen and her family have gathered a community around them in Valley Where First Light Paints the Cliffs and have begun to rebuild. Lozen knows danger still stalks them and she intends to be ready to defend her people, but she hopes to avoid killing another human being--though gemod monsters are not off the table. Miles away, the remaining Ones plot Lozen's...

Twelve-year-old Ada is a Chimera, born with human and animal DNA thanks to a genetic experiment gone wrong. Because being a "kime" is believed to be contagious, she has kept her condition-complete with infrared vision-hidden. But a surprise test outs her, and Ada is shipped off to a quarantined school for kimes. There Ada meets kids of many different shapes, stripes, and appendages, such as a girl with dragonfly wings and a seal-boy. As she adjusts...

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.

After sixteen-year-old Lauren Fielding undergoes a procedure to correct a unique cognitive disability, her perceptions of reality are challenged as she finds herself at the center of a conspiracy involving genetic engineering and government secrets. Lauren has a disorder that makes her believe everything her friends tell her-and she believes everyone is her friend. Her innocence puts her at constant risk, so when she gets the opportunity to have...