The Georgina Kincaid series (Succubus Blues, Succubus on Top (titled Succubus Nights in the UK), Succubus Dreams, Succubus Heat, Succubus Shadows, and Succubus Revealed), written by Richelle Mead, are about the titular succubus in Seattle and her satanic peers, who are just a small corner of the Diabolical Bureaucracy. A lesser immortal, Georgina Kincaid works in a bookstore where she falls in love with a mortal man, a famous author named Seth Mortensen. This is while she is trying to avoid tempting good mortals to Hell but instead just focusing on the already bad ones.The series chronicles her attempts to maintain her principles while finding herself, ironically, tempted to do things in order to be with her lover. The series is notable for having a comic tone and growing increasingly darker as the series goes on. It is also rather subversive with the forces of Hell being treated as a group of harmless bureaucrats.
This series contains examples of:
Affably Evil: Jerome qualifies for this, being genuinely evil but also friendly and supportive.
All Myths Are True: An Indian deity, a Cthulhu-esque horror, and standard Heaven and Hell fair abound in this series.
Earn Your Happy Ending: Georgina manages to reclaim her soul and marry Seth for a happy ending... But it required a Heroic Sacrifice from Roman, pissing off Hell in a major way, and tons of emotional turmoil for her and those near her.
Evil Plan: There's a number of these in the books. In Succubus Dreams Niphon allies with Nyx to drain the energy of Georgina and Tawny so the former can get recalled to the pits of Hell for incompetence. All the while encouraging Tawny to appear as simply a clueless fool. One of these also appears in Succubus Heat.
Fallen Angel: Jerome, as well as other high demons, are fallen angels. (Jerome fell when he fathered Roman with a human woman, and Yasmine falls in Dreams when she kills Joel, a fellow angel, to save her Nephilim lover's life).
Idiot Ball: Unfortunately, Georgina runs with this a tad too often in Shadows.
I Just Want to Be Loved: Georgina can have all the sex she wants, but her succubus nature makes it difficult for her to be in a loving relationship. She's so lonely she buys flowers for herself at one point.
Insecure Love Interest: Georgina thinks she's not good enough for Seth and is going to end up hurting him, because she's hurt people in the past. That and she's a succubus, whereas he's a reserved and virtuous man.
Kick the Dog: Georgina herself gets a couple of these moments. In Book 1, she does this by agreeing to actually work towards damning innocents again in order to be with Seth. In Book 4, she cheats on her best friend Maddie with her ex-boyfriend Seth.
Kiss of Death: Happens in Shadows: In a flashback, Georgina gives one to her dying friend Luc, to save him from a slow, agonising death due to a stab wound to his stomach. In the present day, she does the same to Erik after he is mortally wounded by a gunshot.
Romantic False Lead: Roman. Later Dante and Maddie. Subverted in Book 4 by the fact that Maddie wins Seth. It doesn't take.
Sex Is Evil: Georgina doesn't really do much except encourage people to get busy. It's better if they're cheating on their girlfriends or spouses but not really necessary. There's also the fact she's stealing bits of their life-force as she does it, though.
When All You Have Is a Hammer: Enforced and Deconstructed. Georgina uses sex as a solution to many situations because as a succubus, it's her biggest supernatural strength. This mentality, however, causes and comes from severe emotional trauma.
Your Cheating Heart: Georgina Kincaid became a succubus to cover up her crime of this. Later, she ends up getting cheated on by Seth and then cheating with Seth on Maddie.