Under the Gun is the long-awaited sequel to the bestselling novel, Gun Shy, continuing the story of St. Paul Police Officers Dez Reilly and Jaylynn Savage. Picking up just a couple weeks after Gun Shy ended, the sequel finds the two officers continuing to adjust to their relationship, but things start to go downhill when they get dispatched to a double homicide - Jaylynn's first murder scene. Dez is supportive and protective toward Jay, and things seem to be going all right until Dez's nemesis reports their personal relationship, and their commanding officer restricts them from riding together on patrol. This sets off a chain of events that result in Jaylynn getting wounded, Dez being suspended, and both of them having to face the possibility of life without the other. They face struggles - separately and together - that they must work through while truly feeling "under the gun."