This is a 3 part trilogy, The knife of never letting go/ the ask and the answer/ Monsters of Men. The story starts on a world colonized from another planet (I do love YA books!) A girl in a scout plane crashes on the planet and is found by Todd who is running away from his town. There are good guys, bad guys, and really evil guys. A fun series and the ending is extremely satisfactory, and leaves room for perhaps another book.