Succubus On Top is a Georgina Kincaid novel. Georgina is the succubus with a heart of gold, or something like that. She always seems to work above her pay grade. Yes they have pay grades in hell.
Georgina is still attempting a relationship with Seth, a mortal man. It's touch and go, if you'll pardon the pun. Her old friend Bastien is in town. He's an incubus and enlists Georgina's aid in the corruption of a religious right radio hostess. Georgina is also trying to figure out what's going on with her friend Doug and his band. She's a busy succubus and it makes for a great story. Highly recommended.