Gena Showalter 
Darkest Lie 

Forced to his knees in agony whenever he speaks the truth, Gideon can recognize any lie-until he captures Scarlet, a demon-possessed immortal who claims to be his long-lost wife.He doesn’t remember the beautiful female, much less wedding-or bedding-her. But he wants to. . . almost as much as he wants her. But Scarlet is keeper of Nightmares, too dangerous to roam free. A future with her might mean ultimate ruin. Especially as Gideon’s enemies draw closer-and the truth threatens to destroy all he’s come to love. . . .