Collateral by Callie Hart is the sixth and final installment in the Blood & Roses series and what an epic way to end. 
 Lacey's gone and Sloane, Zeth and Michael are working on finding her. What they find is so much more than they bargained for. The drama is out in full force and while Zeth is trying to battle his own personal demons, Michael is trying to help both Zeth and his cousin Rebel. Sloane is part of the plan to meet with the crazy DEA agent in an attempt to clear all their names and Charlie has gone completely off his rocker. 
 As dark as this story has already been, and it gets darker, we can be thankful that at least we end on a Happily Ever After. Now I just can't wait for Rebel, the next book from Callie and a spin-off to this series. 
 Kirstin's Review: 
 Collateral by Callie Hart. 5 out of 5 stars 
 Oh, I'm going to miss Zeth Mayfair! (And of course Sloane.) 
 Their chemistry has rocked off the charts since they were first introduced in the Blood and Roses series, and it didn't disappoint in the final installment either!! 
 I wouldn't want to give any spoilers, so let me just say that in this final book Sloane finally gets her happily ever after with her very own version of Prince Charming. And who would have thought that Zeth Mayfair had it in him!?! Although her version of Prince Charming is still dark, twisted, and sexy in the bedroom department. I mean, come on!!! We're talking about Zeth Mayfair! 
 So, if you have been following Zeth and Sloane's romance since the beginning in Deviant, I promise you will not be disappointed! Enjoy! ;)