Episode 1 (S03E01)

Debailly is held captive by IS in Iraq. The DGSE enlists Nadia to facilitate his release through Shahanah, a shady art dealer, offering her a position as an EU Deputy Commissioner in exchange for her assistance. Meanwhile, Sisteron travels to Iraq to meet with Kurdish fighters for a rescue mission, but their efforts are thwarted by a fierce sandstorm. In the aftermath, he discovers a railway points diagram from SNCF, which the DGSE suspects is a message from a senior IS figure known as 'Cochise.' Simultaneously, Marina, now a seismologist, continues to grapple with the trauma from her time in Iran.