Alyn's review posted on Guilty Pleasures Book Reviews 
 5 Stars 
 I am sure that every one of us has at least one series that we keep going back to and read over and over again. For me, Demonica is that series. Although the name may seem somewhat dark and sinister, the stories are addicting and keep you on edge from start to finish. While Demonica is not your typical romance series, it definitely leaves readers swooning and begging for more. Even if you are not a paranormal fan, you must introduce yourself to the Sem brothers because once you do, you may never look at Paranormal Romance the same way again. 
 Desire Unchained is the second book in the Demonica series. This story follows Shade; a Seminus demon who works as a paramedic at UG (Underworld General) with his brother Justice Dealer turned doctor, Eidelon as well as his vampire, artifact finder brother, Wraith. The story begins three years earlier when Shade finds out his older brother Roag was killed in a fire at a local club. Fast forward to present times and Shade finds himself chained in a dungeon next to his ex girlfriend Runa. Unaware of who kidnapped him or how Runa is involved Shade notices something different about her. His sweet little human ex girlfriend seemed stronger and feistier than he remembered. 
 Runa could not believe her luck. Locked in a dungeon with none other than Shade. It was bad enough that he broke her heart, but he was also responsible for the life changing event that immediately followed. Confused as to why she was kidnapped and what Shade has to do with it, she is not prepared to be confronted by Shade's darkest enemy. A foe that burned for revenge on the Seminus demons that doomed him to Hell, the man was evil to the bone and determined to show Shade and Runa what pain truly felt like. After watching Shade endure treatment that is pure torture for a Seminus demon, Runa does what she must to help Shade survive and in doing so, transfers her curse to him. What she is unaware of, is that by binding herself to him she has also cursed him to an eternal Hell on Earth from which there is no cure. 
 I cannot even begin to explain what a fan I am of this series. With all of the hype over werewolves and vampires after the Twilight phenomenon, Demonica is a breath of fresh air bringing in a solid paranormal theme with demons, fallen angels and a myriad of other paranormal creatures. While this particular story has a focus on werewolf shifters, they are not all encompassing of the story. The true story in the halls of Underworld General and the caves of a lush tropical hideaway is the love developing between Shade and Runa. Shade is a Seminus demon. He needs sex to survive and he is desperately trying to battle the S'Genesis, a transition in his maturation cycle that causes Seminus demons to become obsessed with impregnating females whether or not they are willing. The only way to stop the transition is to become bonded and mated to a female forever, and forever is not something he is interested in due to his curse. After past mistakes left Shade with many regrets, one of the worst left him doomed to fade into nothingness with constant hunger, pain, yearning etc. and no way to fulfill them. The curse would only be activated if he fell in love and a mate would almost guaranteethat happening. 
 Shade also has another secret, he uses pain to help women heal inner wounds. Something he is ashamed of but obligated to do due to his demon nature. When he is forced into a bonding with Runa, his secret is revealed in his attempt to protect her. The shame and fear Shade has shows how vulnerable this beautiful male can be, and as his walls start to come down he finds that avoiding the inevitable is harder than he thought. Shade is fiercely protective of Runa and is unable to resist her even in anger. Shade and Runa are aggressive, explosive and downright panty ripping sexy when they are together. Add a little humor and the story is simply perfect in balance. I almost dropped my book when I started laughing after a ball gag was used as a projectile. You never want to be on the receiving end of a pissed off female when sex toys are involved. 
 The underlying story in all of this is why Shade and Runa were kidnapped in the first place. There is an enemy in the midst and his anger is personal. Determined to have revenge on the Sem brothers, this demon has been "burned" one too many times and it will take determination and family ties to end his wrath. A fast paced story with adrenaline filled, panty soaking, heart wrenching moments that will make you go back to it over and over again!