Crusher by Elle James

Jack “Crusher” Bailey doesn’t need guns when his hands are deadlier than most arsenals. But even he isn’t prepared for what he finds when sent to infiltrate a bioterror compound—Dr. Marta Hale, bruised, brilliant, and refusing to be the key to the plague her captors want her to finish.

With the cartel hunting them across continents, Crusher must protect the woman whose intellect could wipe out millions—or save them. Forced into close quarters and tighter-than-safe proximity, their escape becomes a race against time, betrayal, and a viral clock that’s already begun to tick.