Locked doors are opening, and magical creatures are tumbling through portals from Mag Mell, the world-between-worlds, into the streets of Chicago. Meanwhile, the romance between seventeen-year-old Teagan, who is part goblin, and the alluring bad boy Finn Mac Cumhaill is heating up . . . which is awkward, considering he is bound by a family curse to fight goblins his entire life. Celtic mythology, adventure, and paranormal romance fuse in the electrifying finale of the critically acclaimed Goblin Wars trilogy.