The IMF goes to a prison camp inside a totalitarian Latin American country. At the camp, an opposition leader is kept in isolation. One of his followers arranged to be arrested and has become a trusty, helping to get the opposition leader's messages out to his countrymen. Prisoners believe the trusty to be an informer. Phelps and Barney arrive as prisoners, aiming to expose the real informer. They're aided by Cinnamon (posing as a Red Cross official) and Rollin (as a guard). The question is whether Phelps can work fast enough to save an innocent man's life.