*~~*ARC kindly provided by the author to me in exchange for an honest review *~~* 
 Warning: the blurb contain spoiler and reveal former events from the story, and even the review, as vague as it tries to be can contain a few. The book is not to be read as a stand-alone. 
 You say a good whiskey is getting better with the age, same goes for guys and it seems also for a good story, one which is getting riper and riper. 
 Barrel Proof is the third book in the series of the two hot FBI agents who are partner, not only in business. 
 The relationship is growing - from partner in business to friendship to a relationship - and you can't read this book as a stand-alone. 
 With every book you want more, you get more and this book - the last in the series - ends with a blow. Events which are unexpected are happening, revealings, saddening and exciting alltogether. 
 You really feel with Agent Irish and Whiskey. :3 
 But not only those are tempting and charming, it's the cast of the other character, the balance. Sometimes you feel so hard with them, you have to take a break. The grief in the first book, all over the second book until the third. 
 When you think, Aidan and Jamie get's their happy end they've to overcome another obstacle - and this time it means a lot. 
 What I really loved about the series is the constant grow. Not only the background plot from the first book is continued, no, it's the character depth, the way how we get to know them. More and more things are shown, identities are built up, the characters feel real. 
 The fact that the author keeps the reader's attention by including crime cases the two agents solve in a fast and pleasurable manner makes the books sheer brilliant. You really see the author did a great research, something which pleases me extraordenary. 
 Banter and witt, humorous scenes and sexy encounter are also the other parts of the book. Makes it full-bodied and smooth, gives it its spark and basis. 
 This series really should be in every selection of M/M romance lovers who adore FBI agents, opposite character, a solid story, from the first to the last novel in the series and with twist of turns, unexected and thrilling until the end. 
 Review originally posted on my blog with added content Mikku-chan / A world full of words