An experienced intelligence agent at 22, Tore Haugland faces certain danger when he accepts an assignment in occupied Norway knowing that his predecessor was killed by the Gestapo only a week before. The dying agent left a mysterious message in his interruption code that London calls the "Brisling Code." London wants Haugland to find out what it means as well as to gather information on the expansion of the U boat base in Bergen. Haugland is sent to work at drafting office in a shipyard. His mission is jeopardized when a ruthless SS officer, Hans Becker, with his own secrets, is alerted to his presence by a traitor at the Verks. Becker will do anything to find him. If Haugland can't discover the meaning of the Brisling Code in time, it could cost him his life and expose the members of the local resistance he works with. If he does, it could hurt the people he has grown to care about. But what if the message was written down wrong?