Synopsis

Marina begins her work at the Institute of Earth Physics. A fleeting glimpse shows Debailly, wired to a polygraph, continuing his narrative. The DGSE questions Gherbi, seeking confirmation that he is not also employed by Algerian intelligence. Duflot's brother-in-law operates undercover in the Sahara. Simultaneously, Nadia’s meetings with Lefevbre draw the attention of Nadim, a Syrian agent. Debailly investigates Nadia’s history, questioning her true purpose in Paris.