Baltimore, Maryland, is a city in alarming distress. Rising violence is fanning the flames of public outrage, and all law enforcement agencies, including the FBI, are catching blame. Thus the FBI’s latest ideas to improve public relations: a municipal softball league and workshops for community leaders. But the new commitments just mean more time Special Agents Ty Grady and Zane Garrett have to spend apart when they’re happily exploring how to be more than by-the-book partners.

Then the latest spate of crime explodes in their faces—literally—throwing the city, the Bureau, and Ty and Zane’s volatile partnership both in and out of the office into chaos. They’re hip-deep in trouble, trying to track down bombers and bank robbers in the dark with very few clues, and the only way to reach the light at the end of the tunnel together requires Ty and Zane to close their eyes and trust each other to the fiery end.

Special Agents Ty Grady and Zane Garrett are back on the job, settled into a personal and professional relationship built on fierce protectiveness and blistering passion. Now they're assigned to impersonate two members of an international smuggling ring-an out-and-proud married couple-on a Christmas cruise in the Caribbean. As their boss says, surely they'd rather kiss each other than be shot at, and he has no idea how right he is.

Portraying the wealthy criminals requires a particular change in attitude from Ty and Zane while dealing with the frustrating waiting game of their assignment. As it begins to affect how they treat each other in private, Ty and Zane realize there's more to being partners than watching each other's backs, and when the case takes an unexpected turn and threatens Ty's life, Ty and Zane will have to navigate seas of white lies and stormy secrets, including some of their own.

Being snowed in isn't so bad when you're on vacation with your two best friends. And when Kasey reveals he's a gay romance author, the vacation takes a turn for the steamier. Mitch already knows all about it, being bisexual, but Warren -- Warren hasn't got a clue... until he watches Mitch help Kasey with "research" for his next novel and starts seeing snow melt.

A series of murders in New York City has stymied the police and FBI alike, and they suspect the culprit is a single killer sending an indecipherable message. But when the two federal agents assigned to the investigation are taken out, the FBI takes a more personal interest in the case.

Special Agent Ty Grady is pulled out of undercover work after his case blows up in his face. He's cocky, abrasive, and indisputably the best at what he does. But when he's paired with Special Agent Zane Garrett, it's hate at first sight. Garrett is the perfect image of an agent: serious, sober, and focused, which makes their partnership a classic cliché: total opposites, good cop-bad cop, the odd couple. They both know immediately that their partnership will pose more of an obstacle than the lack of evidence left by the murderer.

Practically before their special assignment starts, the murderer strikes again – this time at them. Now on the run, trying to track down a man who has focused on killing his pursuers, Grady and Garrett will have to figure out how to work together before they become two more notches in the murderer's knife.