When an angel and a demon fall for the same mortal man there is only one solution...share him. Halloween night at the Inferno club always draws a crowd. When Tristan spots a stunningly gorgeous man dressed as a demon across the dance floor he sets out to draw his attention, little realizing he has already gained the notice of another. The demon disappears into the throng of revelers, but with the heavenly handsome Machidiel in his arms, Tristan doesn't mind. Even though Mac warns him they can never have more than a one-night stand, Tristan longs to see the man who gave him the best sexual experience of his life again. One year later, Tristan opens his door to find Alastor, the demon from the Inferno, who claims they have a date tonight. Alastor may be the one man who can make Tristan forget Mac. Little does he realize Mac isn't as far from his reach as he believes. When Mac reappears he has a proposition for Tristan and Alastor, one that means breaking rules and potentially getting him stripped of his wings. A menage formed between an angel, a demon, and a human means the sex is hotter than hell itself, but only time will tell if the relationship they have forged together is made in Heaven or Hell."

Can an alien with no knowledge of humans or concept of sex find lasting love with a human man? Zak, an alien from the planet Trimmeron, is a member of a race of beings who transform into other species during their years of puberty. It's customary for the youngsters to be fostered to the worlds native to their new forms, to study and learn about the races who will play an important part in their lives. When Zak turns into a human it comes as a surprise to everyone, for only one other before him has ever done so. Nevertheless he is sent to Earth, a world he views as primitive and barbaric. He arrives with a chip on his shoulder and attitude to spare. He does not believe anyone on Earth can have anything to teach him. When Zak meets college student Sam he soon discovers he has a lot to learn, not only about humans, but also about himself. Trapped on an unfamiliar world and in a strange body that seems to have a mind of its own, Zak has no idea what is happening to him, only that Sam seems to be the key to the strange afflictions he is suffering from. But can an alien find love with a human being?

With one of his lovers imprisoned in the Underworld, Mac has no choice except to go where most angels fear to tread. With Tristan imprisoned in the Underworld, the menage is broken. Angels are forbidden to enter the demonic domain and while Mac has been breaking rules in recent months, he doesn't have the power to enter the Underworld. Alastor is still unsure about his position in the relationship following recent revelations, but he cannot walk away when he is the only real link between his two lovers. Splitting his time between Mac and Tristan, he hopes they can soon find a way to reunite the two men in his life. As time moves on, Alastor realizes he is struggling to satisfy Tristan's thirst for sex. His lover needs more than he can give him and craves Mac in his bed. Mac still believes he can complete his mission to save his two lovers, but with one of them out of his reach, it is going to be far from easy. During their time together they have made plenty of enemies, including one who would seek to separate them forever, even if it means biding his time until Alastor and Tristan are at their most vulnerable, when even the love of an angel can't save them."

Is it possible for a demon to be a good man, or are all who have fallen for temptation evil at the core? Tristan, Machidiel and Alastor are bound together by love, but their lives are running far from smooth. Thanks to Tristan's demonic bargain with an incubus, they have no choice other than to accept that their lives are never going to be the same again. To fulfill his obligations to the demon Tristan has two choices-remain with the incubus as his trainee or find a mortal to take his place. Neither option is appealing. The three lovers struggle to release Tristan from his bargain, but find bigger problems on the horizon when a human caught up in the mess is taken prisoner by the Demon King himself. With no help forthcoming from either angels or demons, the three lovers are on their own with a seemingly impossible mission before them-rescue the mortal from the Underworld. Mac, meanwhile, has problems of his own. The archangels are voting on whether to ban relationships between angels and demons, and if the new law is passed he must choose between his wings and his lovers. The three of them believe their love is strong enough to see them through the hard times ahead, but if they aren't careful the repercussions of Tristan's bargain could tear their menage apart forever."