The Key's Relic — E.A. Reynolds

[Siren Classic ManLove: Alternative, Fantasy, Paranormal, Romantic Suspense, MM, HEA] The latch is a demonic relic that give Hansel more power than he knows what to do with, but with power comes a seduction of darkness so insidious he won't see it coming. Dallan is aware that the latch could corrupt Hansel, but he prays Hansel will be strong enough to fight the lure especially with the trouble of a soul eating demon coming to town. Dallan knows what Murlog wants and there is only one way to get it, destroy Dallan. As the evil of the latch creeps into Hansel's mind, he betrays Dallan without a single thought putting not only Dallan at risk but the man Dallan is now charged with protecting at risk as well. Realizing the darkness could make him powerful but will surely cost him Dallan, Hansel struggles to pull free of the clutches of evil to reclaim himself and fight for the man he loves.