Sharad (Darksilver Book 5)

Time has run out and every option is gone.
Paramount Sentinel Devyn Fletcher has pledged her entire life to protecting Terra. Her devotion to the Blade Lords has robbed her of independence, health, happiness, and even emotion-until now. Because now that she knows Sharad, she knows rage.
Blade Lord Sharad of the House of Scorpions has been to the depths of hell in the hands of his enemy. He has sacrificed all in order to protect his people. In return, he expects nothing more than his due: abject fealty and glad servitude. But his Paramount has other plans.
If they agree on nothing else, it is this: the gate to Terren lies open and, unless they can close it, all of its people will be enslaved.