Across the Universe

Amy and her parents decide to go into frozen sleep in order to travel aboard a spaceship to colonize a remote planet. But things don't work out as they'd expected, and Amy is awakened during the journey, before the ship arrives. Amy finds herself in a new, surprising, frightening world aboard ship, a world controlled by a mysterious leader named Eldest with his student, Elder.

I read all 300+ pages in one sitting. It's a popular genre now, the YA dystopia, and this book is quite typical of that genre, with a scary world that feels like an exaggerated version of our world, with scary leaders who stretch and warp the truth for their own ends, with strong young rebels who fight to restore goodness to the scary world.