Thirteen-year-old jonah has always known that he was adopted, and he's never thought it was any big deal. Then he and a new friend, chip, who's also adopted, begin receiving mysterious letters. The first one says, "You a...Thirteen-year-old jonah has always known that he was adopted, and he's never thought it was any big deal. Then he and a new friend, chip, who's also adopted, begin receiving mysterious letters. The first one says, "You are one of the missing." The second one says, "Beware!