Newbery Honor-winning author Gail Carson Levine shares a story of family, prejudice, faith, and unlikely friendship in medieval England, for every child who is more perceptive than they seem, and braver than they know. Chera, Lummie, and Joan are unusual in medieval Winchester, England. Two girls and a boy, and two Jews and a Christian are not supposed to be friends. Most days, after their studies with Rabbi Baruch, they enjoy scaring themselves in the greatly feared nearby forest, home to ne'er-do-wells and sprites, where they make another unusual friend, a starving outlaw. But the trio's fun is shattered when Chera's grandmother, a wealthy widow, and Joan's mother, her maid, are murdered. Jurors name a suspect, who flees the city, and he may not have killed them anyway. Almost anyone could have, so just investigating isn't enough. What's more, the Unusuals are sure Lummie's grandmother will be the next to die.

They concoct a perilous plan, which needs allies to succeed, but everyone else thinks their idea is dizzy--crazy. With lives in the balance, this trio of friends must band together against the odds and call on their unusual bonds to help seek justice.