Lock and Key — M.A. Nichols

Nothing is going the way they'd hoped. The Group may be united again, but they're still stumbling in the dark. They know what the Dark Knights want, but stopping it from happening is a whole other matter. Racing against time, they scour the globe to find the missing Lock and Key -- the two final Tréaltha talismans that hold the power to keep Balgar and his armies locked inside the Drogue. If only they knew where to start looking. And if only their future didn't rest in the shaking hands of Emma Shaw. Blood ties Emma to the fate of the Tréaltha, but she knows she doesn't have the strength to wield them. With the final battle looming before her, Emma must decide if she can be the Warden the Group needs. Lock and Key is the explosive conclusion to M.A. Nichols' Tréaltha Series.