Crosshairs on Castro weaves an assassination plot around the 1962 Cuban Missile Crisis. Army lieutenant Charlie Parnell is blackmailed into the scheme by CIA rogue agents. Masquerading as an Irish journalist, he enters Havana only to meet danger at every step. He must elude his Cuban watcher, the tantalizing Isabel Fernandez, who learns his true identity just as the Crisis erupts. While she debates what to do, Castro prepares for invasion, throwing Havana into chaos and cutting off Charlie's escape route. He and Isabel must scramble for their lives.