Shortly thereafter she receives a letter containing some diary pages of a lieutenant Guy Rossi who served in 1955 in the Algerian war under the command of Duplan and disappeared in 1957 under mysterious circumstances.

Every day Galois receives a continuation of the diary in which Rossi describes in detail his ambivalent relationship to Duplan and his dirty methods.

As she reads the diary the film flashes back to black-and-white scenes of Rossis' experiences.

Rossi witness torture and public executions, and finds himself torn between wanting peace and disgust at the brutal methods being employed to secure it.

It is revealed he left the diary with the friend with the intended final recipient being his father because he feared for his life.