I replied and it didn't post, so apologies if the other one comes up and its redundant..
I don't know the other books or the history, as many who come across your book might not. That being said, I'm not sure if you are referring to physical rehab, or substance abuse rehab. I would think the former, however given the context of a DEA agent and drug lord perhaps the latter is more likely? I happen to be familiar wtih Quantico so I believe you are referring to their addicition treatment program, but is that obvious to a broad audience?
You may decide it doesn't matter, but those two story lines may appeal in different ways to different people. For example, someone who has faced substance abuse, or has had those close to them do so, may be excited by the prospect about some rogue agent going after the person who she feels contributed to the sicknesses of so many- that would be their hero.
Perhaps its irrelevant to what you are trying to get across, I just thought confirming its a drug addiction recovery resonate with those who can identify- which unfortunately is a lot of people- more than an injured agent getting back in the line of duty.
Here's a revision: Charley Manner finds trouble in the Deep Strait when DEA Agent Vicki Borne returns from rehab at Quantico. She’s out for revenge and wants Charley and his sidekick Hawk to track down the Mexican drug lord who put her there. They stumble upon a secret transfer station forty miles south of Key West. What they find in the depths is far more life-threatening than illegal drugs.
[/quote]