The Darkest Lie (Lords of the Underworld #6)

The Darkest Lie (Lords of the Underworld #6)
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.