The 5th Wave: The Last Star (book 3) (Rick Yancey)

Following the major motion picture release starring Chloë Grace Moretz, the heart-stopping finale to the bestselling 5th Wave series.We're here, then we're gone, and that was true before they came. That's always been true. The Others didn't invent death; they just perfected it. Gave death a face to put back in our face, because they knew that was the only way to crush us. It won't end on any continent or ocean, no mountain or plain, jungle or desert. It will end where it began, where it had been from the beginning, on the battlefield of the last beating human heart.