Alyn's review posted on Guilty Pleasures 
 Sinful does not begin to describe this perfection of paranormal, puddle enducing demons that will melt your panties the moment you meet them. While there are many amazing paranormal romance authors out there and a number of series that I am a proud addict of, none can compare to that of Larissa Ione's Demonica. No other author I have encountered has managed to create an Underworld Hospital filled will life saving Seminus demons that thrive on sex. 
 Eidelon is the demon in charge when it comes to his baby; Underworld General Hospital (UGH). A safe haven for demons to receive proper medical attention away from prying human eyes and demon hunters known as The Aegis. Unfortunately there is something more going on than many would like to admit. Demons have been arriving at the hospital with missing organs and on the verge of death. Even worse, many demons, vampires and werewolves have gone missing only to turn up dead days later. Someone is harvesting organs for the black market and Eidelon and his two brothers want to know who. They suspect the Aegis is involved but there is no way to confirm their suspicions. That is, until an Aegis slayer comes through the doors of UGH on the verge of death. As a Seminus demon on the verge of his final transition, the last thing he needs is an enemy he wants to bed. 
 Tayla has been a loyal member of the Aegis since she was a teenager. After watching her mother suffer a gruesome death at the hands of a demon, she was determined to rid the world of the creatures that stole her family. When she starts having difficulties in the field, a disaster occurs and Tayla finds herself a partner short, and herself incapacitated. Waking up in a hospital and staring at the most gorgeous doctor she could ever imagine, Tayla is not sure what happened. But when her sexiest fantasies about that doctor come to life, she finds her dreams are more realistic than she ever realized. 
 Eidelon could not believe his attraction to the slayer that came through his doors. As a slayer, she should die for tha pain she has caused the demons he serves but something about her prevents him from acting on that fact. She was sexy as sin and he could smell her arousal down the hall. Of course it doesn't help that he and his brothers are sex demons and cannot avoid a woman's arousal. When he checks on his patient and her hands wander to places he had not expected, Eidelon's instincts and desires come full throttle as he forgets his resistance and takes exactly what he and Tayla both crave. When Tayla realizes that her dream is not a dream and that her sexy as sin physician is really a demon, she is lost as to how to react. Her body says that Hellboy (Eidelon) is everything she needs but her training says he is everything she should hate. What she doesn't realize is that she is the embodiment everything she hates as well. Can she overcome her prejudice to learn the truth about the demons she despises? 
 Grab your panties and hold on tight because this story is a wild ride that does not stop from the moment the you read the first sentence. Eidelon and his brothers Shade and Wraith are Seminus demons that help run Underworld General. 
 Their banter is simply hilarious and their quips and smart ass comments will have you laughing every time they speak. 
 Eidelon and Tayla have a spark that ignites everything in its path. Their relationship is nothing less than explosive and their intimate moments are hard, heated and heavy. Their attraction is powerful and their love/hate moments will have you laughing out loud and squirming with each innuendo. 
 Ione creates a new world with Demonica, where a demon bible tells a different side to the story of creation and demons live side by side with humans without their knowledge. The complexity of the characters and the underlying story lines among the Aegis, a mysterious being posing as one of the Sem (Seminus) brothers, and Tayla will have your mind reeling and leave you turning pages quicker than your fingers can keep up with. With mystery, deception, surprises, and of course super hot seminus demons ready to please a wanton woman in a heartbeat, this book is a stunner and not one that should be missed!