Going Under — Dena Christy

Ben Rainey promised his dying sister he would protect her infant son and raise him as his own. For ten years he's committed himself to his nephew, to the exclusion of all other relationships. He has been content with his love 'em and leave 'em lifestyle until he meets a woman who stirs within him a desire hotter than any he has ever felt before.

Taryn is a demon, commanded by her master to kill Ben's nephew. Her master believes the child is prophesied to end his life, and he will do whatever it takes to ensure that it doesn't happen. Failure is not an option for Taryn, since her master holds her sister's life in his hands. All she has to do is get Ben to trust her so she can gain access to his nephew. She doesn't count on being with Ben, whose kiss makes her long for a love she knows she can never have.

Now as Taryn's master grows impatient, she must choose between saving her beloved sister or saving the child of the man she's grown to love.