I have mixed emotions about this book. There were parts I thought were spectacular: the research involved for the crime portion of the book... & well, those were some of the hottest scenes I've read. 
 What fell short for me: I am a fast-paced kind of girl. I want the meat of the story, and as impatient as I am, I want it RIGHT NOW! 
 I frown upon skimming, but I wanted to skim Cut & Run, so I did. While setting up a scene is important: location, action, environment. I do not need to know every movement of one's body. As in: I walked across the lobby, I pushed the elevator button, I stepping into the elevator, I rode the elevator, the elevator dinged, the doors opened, I stepped out, I then walked down the hall. This filled the book, causing me to lose interest. I think those sections read as a script, as direction for the actor. This dropped the book as a 5 star read for me. It is common among new authors. I had the opposite problem, I didn't set anything up when I first started writing. Finding the balance has been a difficult journey for me, so it sticks out of a book as I read. 
 Another pacing issues. The abrupt cut off of the story around 60%, that then skipped 4 months, but a page later pretty much put the reader in the same situation as the page before. I'm not sure what that was used for. Perhaps this would have flowed better if we were in that 'gap' for a chapter before the pair partnered up again in the same way they were prior. If I'd accidentally skipped a page on the ebook, I'd have thought it was the same time frame. 
 More pacing: the crime storyline. This was drawn out without much information given. I felt no true excitement trill through me, no "AH-HA, that's the bad-guy!" I didn't even care about the case- like at all. 
 The connection between the guys. While the scenes were so scorching it could melt paint, the banter annoyed me- turned me off. It wasn't how a 42&34 year old men would act- not ones that have been Marines and are FBI agents. No way. There was a swift change during the smexy- Ty acted all gruff, then for some reason, during sex, one of them HAD to be the girl. He turned girly. Why can't it just be two MEN from start to finish? You don't get a personality transplant during sex. I don't mean cuddling, men cuddle. I mean internal dialogue. After the 'gap' Zane became the girly one. Just let them be men. I'm a girl reading m/m because I WANT MEN from page one to the end. I could have switched their names around and not known who was who because the character traits imploded. I also never knew what color Zane's eyes were. That bothered me for some reason. After all the arm movements and unnecessary details, never knowing that important detail was off-putting. 
 In truth, if felt no connection & no true desire to know the ending. I'm not sure I will read the follow up books. I did like Parts, but not enough to be interested. 
 I am not bashing the book or the Authors. This just isn't the type of read for me- pacing-wise. It will appeal to a vast amount of readers, but not the impatient sort. Cut & Run was well written, and while overly detailed, the research was spot on. Just not for me.