Falling Hard (Bad Boys Undercover #2)
HelenKay Dimon

Lexi has been asking too many questions, drawing the wrong kind of attention. As soon as she lays eyes on West, she can tell he's quiet—yet tough—and has a rescue complex which will come in handy for going up against the world's most ruthless gunrunners.
Cut off from the rest of the Alliance, Lexi and West navigate the brutal terrain and a primal sexual attraction. Sticking around has never been West's way, but now he'll use every resource to keep Lexi by his side, safe from a killer who leaves no loose ends behind.