Bittersweet Darkness

There are no monsters, only good guys and bad guys. That's the creed by which Detective Inspector Faith Connolly has always lived.
When Faith discovers she has a time bomb counting down in her head, she has one goal: to solve the murder case she's working on and gain closure. Her investigation brings her in contact with Ash Delacourt, who is definitely one of the bad guys, albeit a stunningly gorgeous one.
As payment for a debt, Asmodai, AKA Ash Delacourt, finds himself working with the Order of the Shadow Accords. He's the demon representative on the newly formed committee for the integration of mankind and well...everything else. It's a chance to be near his daughter, make a new start, and—once he's met the delectable Detective Connolly—maybe have a little fun.
But as Faith's investigation deepens, her beliefs are eroded and for the first time, she is falling in love—with one of the bad guys. How can she ever let Ash close when her time is running out...?
The Order series is best enjoyed in order.
Reading Order:
Book #1 Bittersweet Blood
Book #2 Bittersweet Magic
Book #3 Bittersweet Darkness
Book #4 Bittersweet Christmas