Messenger (The Giver, #3)

For the past six years, Matty has lived in Village and flourished under the guidance of Seer, a blind man, known for his special sight. Village was a place that welcomed newcomers, but something sinister has seeped into Village and the people have voted to close it to outsiders. Matty has been invaluable as a messenger. Now he must make one last journey through the treacherous forest with his only weapon, a power he unexpectedly discovers within himself.