Science Fiction

Marissa Meyer
Iko an audacious android and best friend to the Lunar Queen Cinder has been tasked with hunting down Alpha Lysander Steele, the leader of a rogue band of bioengineered wolf-soldiers who threaten to undo the tenuous peace agreement between Earth and Luna. Grades 7-12.
Alexandra Bracken
Sixteen-year-old Ruby breaks out of a government-run 'rehabilitation camp' for teens who acquired dangerous powers after surviving a virus that wiped out most American children Grades 9-12.
Ernest Cline
Immersing himself in a mid-twenty-first-century technological virtual utopia to escape an ugly real world of famine, poverty, and disease, Wade Watts joins an increasingly violent effort to solve a series of puzzles by the virtual world's creator.
James Dashner
As the third Trial draws to a close, Thomas and some of his cohorts manage to escape from Wicked, their memories having been restored, only to face new dangers as Wicked claims to be trying to protect the human race from the deadly flare virus. Grades 7-12.
Madeleine L'Engle
Meg Murry and her friends become involved with unearthly strangers and a search for Meg's father, who has disappeared while engaged in secret work for the government. Grades 5+.
Philip Reeve
In the distant future, when cities move about and consume smaller towns, a fifteen-year-old apprentice is pushed out of London by the man he most admires and must seek answers in the perilous Out-Country, aided by one girl and the memory of another. Grades 7+.
Neal Shusterman
(The Arc of a Scythe, book 2)  Rowan and Citra take opposite stances on the morality of the Scythedom:  Rowan has become a vigilante snuffing out corrupt scythes and Citra, who gleans with compassion, openly challenges the ideals of the "new order." When her life is threatened, it becomes clear that not everyone is open to change.  Will the Thunderhead intervene or simply watch as this perfect world begins to unravel?  Grades 9-12.   
S. J. Kincaid
Nemesis is a Diabolic, a humanoid teenager and the galaxy's most deadly weapon, who masquerades as Sidonia, a senator's daughter, and becomes a hostage of the galactic court. Grades 8-12.