Succubus Heat is the fourth volume in Richelle Mead's series featuring Seattle succubus, Georgina Kincaid. By now, the characters and milieu are well-established and readers will know them well: Georgina, passionate, impulsive, intelligent and deeply caring - not quite what one would expect from a shape-shifting, immortal temptress whose purpose is to devour the life-energy of mortals in order to advance the cause of Evil; Jerome, arch-demon of Seattle, who manifests in the mortal world in the form of John Cusack; Seth Mortensen, writer, honest man and the love of Georgina's life - despite the fact that he's currently dating one of her mortal friends; and Carter, the angel who associates with the denizens of Evil in the cause of Good.
All the familiar characters are back, although some play less of a role than previously, this time around. As the novel opens, Georgina, still heartbroken over her break-up with Seth, is sent by Jerome to Vancouver to help out the local arch-demon who's been having problems with a group of Satanists who, by attracting too much attention, are recruiting people to the cause of Good, instead of Evil. Shortly afterwards, however, Jerome vanishes, severing all of his minions' links with their infernal powers - his vampires can walk in the sun, his imps lose the ability to see mortal souls, and Georgina no longer absorbs life from anyone she becomes intimate with. Despite this meaning that a major obstacle to her getting close to Seth again has now been removed, it's up to Georgina to find Jerome, and unravel the mystery of his disappearance, before his superiors in Hell appoint a new arch-demon of Seattle and she and her friends find themselves with a new infernal master.
Georgina is a sympathetic heroine, and her witty voice makes Succubus Heat as engrossing a read as the previous three books. Mead's take on the forces of darkness as a great bureaucracy, with much of the work on Earth being done by `lesser immortals' - humans who have sold their souls for one reason or another - is both intriguing and amusing, if perhaps a little unbelievable, as none of the servants of Evil seem that, well, Evil. That aside, readers will, no doubt, find themselves glued to the text as Georgina and Seth's romance continues its rollercoaster ride, with both highs and lows, and much, much more, obviously, to come.