The family curse has been lifted, and the Widdershins sisters-Betty, Fliss, and Charlie-are free to leave the misty prison isle of Crowstone. But when a mysterious girl arrives at their inn accompanied by a will-o’-the-wisp, or ghost, it seems another adventure has landed on their doorstep. The stranger, named Willow, is an escaped prisoner from nearby Lament, desperate to clear her father's name before he's executed for a crime he didn't commit.