Unable to bear children, Trevor and Adelle Seawick receive an interesting call from Adelle's sister in Germany: an infant has been found abandoned deep in the forest. After visiting the baby boy, Adelle is excited at the possibility of finally becoming a parent. Trevor is less sure, but they adopt the boy and bring him home to Louisville, Kentucky. Garrison is a brilliant child, learning to walk and speak much earlier than his peers. Yet he suffers from sharp, unexplainable pains that confound even the doctors. And what they do find is astonishing: Garrison doesn't have a blood type-at least, not a consistent one. The several samples taken don't match one another, and they change from day to day as they are re-tested. Then Garrison begins to bite. The first time, the wounds he inflicts on a barking dog are enough to kill it. The second time, he attacks his father. Trevor notices his body is changing after the bite; he feels achy, his limbs are growing, and his face reminds him of a wolf. He can no longer live without answers. Lewis must travel to Germany and discover who Garrison really is.