4.5 for this contemporary paranormal romance. 
 This is the third book in a series and is best enjoyed by reading the previous books. 
 Madison has been working on her powers, but no one in her coven was strong enough to save her younger brother from dying, so she sold her powers to Caden, a crossroad demon. Now she's his "beck-and-call" witch much to her dismay. And her boyfriend Isaac isn't wild about this arrangement either. Caden calls Madison at all times of day, particularly relishing in disrupting her plans with Isaac...so there's a LOT of friction. 
 Caden's most recent tasks involve Madison helping him to collect the four pieces of a Binding chain which, when united, will allow the wearer to control the actions and powers of any being, even a supernatural one. It's too much power to trust int he hands of a demon, but Madison must comply with Caden's demands or risk him no holding up his end of the bargain---essentially causing her brother to die. 
 Madison does seeks some help coping with her new "job," mostly confiding in her BFF Kaylee who inadvertently raises the dead. Yep. Zombie. (Well, sorta....) Plus, it seems that Caden's big brother has some serious designs on the binding chain, or Madison, or both. 
 I must admit, this book took directions I wasn't expecting. Madison, Isaac and their coven are determined to thwart Caden's attempt to unite the binding chain pieces, yet, in the process of working against Caden, Madison learns that Caden's motives aren't what she expected. No, he proves time and again that his behavior isn't that of a typical demon. That doesn't mean he's all good. He does take advantage of Madison's physical vulnerabilities on more than one occasion. Clearly, Caden would love to explore a more physical partnership, but he stops short whenever Madison puts him in check. That said, the love triangle here is really more tense than most YA romance--with reasons, but it's difficult nonetheless. 
 For her part, Madison is keeping too many secrets, and all of them will drive a wedge between herself and Isaac--if he ever finds out. There's a lot of tension, mortal and emotional, with lots of bargaining and some re-drawing of Madison's agreement with Caden. The resolution is one fast ride to avoid eternal damnation. Without the trust developed between Madison and Caden there would be no happy. And, while this story ends clearly, the door is open to another book in this series. Yay!