OMG. I've just... 
 Well... 
 Okay. This is the fourth book in the THIRDS series. And at the end of the previous one, Sloane Brodie was injured by a car bomb explosion. It was (perhaps) fatal and we waited on pins and needles, praying alongside Dex, his partner in their job--and in bed (though THIS is a down-low issue)--to hope that his heart (and Sloane) will make it through the night. 
 I'm not spoiling this part. I will say that it is tense, and the feels are heart-wrecking. 
 Ash has been left to care for/tail Dex as Dex begins the revenge mission to end all revenge missions. Beck Hogan, chief of the Ikelos Coalition and person responsible for Sloane's injuries, is Dex's target--but Dex doesn't know that he is Beck's target. He and Cael are the prime targets for Ikelos operatives who consider Therian THIRDS operatives to be traitors to their race--and knowing that Ceel is precious to Ash, who had recently infiltrated then double-crossed the Coalition. 
 Problem with Dex's vengeance plan? Destructive Delta is put on leave. With Ash and Sloane severely injured, they can't go on patrol, and the brass is determined to keep the unit on ice until Hogan is in custody, or dead. 
 Dex works on the side, however, setting up a shadow office and calling in favors from Delta and Alpha agents--all to take Hogan out. It's dangerous, from a real life and a professional standpoint. There are set-ups and double crosses, and Hogan get the best of Dex time and again. 
 Plus, Dex's really walking a very very thin line of dishonesty--one that could very well cost him his job, and Sloane. 
 The pace never lets up. There is loving that THIRDS fans have been clamoring for (cough, cough CALVING & HOBBS!!!) and Cael and Ash reach an understanding, if nothing else. 
 The intricate web of this world is being tightened and the relationships are becoming strong, more open, and trust is a conscious element within the Destructive Delta group. Plus, all the side characters are more fleshed out, filling roles as POV characters and humor elements. 
 I didn't read this book, I inhaled it. Can't wait for the next chapter in this series.