Bloodlines by Richelle Mead

The spin-off series from Vampire Academy follows Alchemist Sidney Sage as she must come to the aid of vampires.

Ender's Game by Orson Scott Card

Aliens have attacked Earth twice, and the government trains child geniuses to combat the alien threat.

A Million Suns by Beth Revis

In the sequel to Across the Universe, Amy and Elder must join forces to solve a puzzle on the spaceship carrying them to their new home.

The Truth About Forever by Sarah Dessen

Macy deals with her father's death and opens herself up to new friendships after she begins a catering job.