In West Berlin, a British solder has injured a call girl, and rather than face charges, defects to the East Germans. To spare the soldier's wife, Mann goes "Over The Wall" too in an attempt to bring him back.
At a base where boys are trained as would-be soldiers, one has nearly committed suicide and another several petty crimes in the nearby town. Mann learns that an overzealous boy officer may have pushed them to the breaking point.
When a German civilian is run down by a group of British soldiers in a stolen car, Mann finds out the pressures on the men that pushed them to do it, and those involving the base and it's personnel with local politics.
Mann is sent to investigate a pub brawl which got out of hand. Not only is his list of suspects huge, but this problem is also compounded when he discovers that they are all due to ship out to the Middle East in the next few days.
A night-time commando raid on a sampan in the South China Sea ends in death for a member of the squad. Suspicion falls on the rest of the squad as this is the second death they've had recently, and Mann is asked to investigate.
Mann is sent to a jungle warfare training school to investigate the theft of a Sterling sub-machine gun. All signs point to it being stolen by some natives, but the head of the training camp is certain it's one of the soldiers.