National Geographic Channel 'S1/E1 - Marti Peterson'. The widow of a CIA officer, who was killed in action, goes undercover in Moscow. 2026-06-07 'S1/E3 - After The Flood'. Past floods reshape how engineers build barriers against rivers and storms. 2026-06-07 'S6/E10 - Chinook Helicopter Crash'. 25 members of the Northern Ireland intelligence community lost their lives in a helicopter crash in 1994. Was pilot error really to blame? 2026-06-07