K.D. Loveridge's The Twisty Passages of Time is his debut YA novel.
Twisty Passages follows the life of a young boy whose sister died one year prior. As he is about to enter the sixth grade, his sister's death leads him to a great secret: His family are part of a colony of time refugees that are hiding in the future from an enemy that nearly brought their people to extinction. Faced with an uncertain future, he must first endure bullies at school while learning to cope with the new powers he has received to survive in the dystopian world of his grandparents.
From the back cover:
Liam Fennly had a typical childhood growing up in a small oceanside town called Stonehelm, Oregon. He's the youngest of five children and has a best friend named Richard Sommers. The pair grew up together, attending elementary school, sharing a paper route, eating lots of junk food, and playing video games.
On Liam's eleventh birthday, his sister, Mariam, died unexpectedly from a mysterious illness that took the lives of fifteen other teenagers living around Stonehelm all within a few months. Exactly one year later, two crows bring him clue that her death may have been a lie. Facing sixth grade, Liam soon discovers his family has been keeping a great secret from him. Everything typical about his childhood is about to end as he begins a journey to discover where his family came from and what happened to his sister.