Bloodkin by Amelia Atwater-Rhodes
When a shapeshifter/vampire nation is charged with a crime against Midnight that sixteen-year-old Kadee and her friend Vance played a hand in, Kadee feels compelled to return to the Shantel forest where she must confront her past and the decisions she has made in the pursuit of freedom.
Challenger Deep by Neal Shusterman
Caden Bosch is on a ship that's headed for the deepest point on Earth: Challenger Deep, the southern part of the Marianas Trench. Caden Bosch is a brilliant high school student whose friends are starting to notice his odd behavior. Caden Bosch is designated the ship's artist in residence, to document the journey with images. Caden Bosch pretends to join the school track team but spends his days walking for miles, absorbed by the thoughts in his head. Caden Bosch is split between his allegiance to the captain and the allure of mutiny.
Charlie, Presumed Dead by Anne Heltzel
Told in separate voices, Lena and Aubrey, each hiding her own secrets, set off in search of the truth about Charlie, including if he is really dead, after meeting at his funeral and learning that he was dating both of them.
Cuckoo Song by Frances Hardinge
In post-World War I England, eleven-year-old Triss nearly drowns in a millpond known as "The Grimmer" and emerges with memory gaps, aware that something is terribly wrong, and to try to set things right, she must meet a twisted architect who has designs on her family.
Daughter of Deep Silence by Carrie Ryan
At fourteen, Frances survived a slaughter that claimed the lives of her parents and best friend, Libby, but she took on Libby's identity and wealth while plotting revenge against the powerful Wells family and now, at age eighteen, is ready to destroy them, including her first love, Grey.