The swastika flies from the top of the Eiffel Tower. Soldiers clad in field grey patrol the streets. Buildings have been renamed, books banned, art stolen and people disappeared. Amongst the missing is an Allied intelligence cell.
Gone to ground? Betrayed? Dead? Britain's Special Operations Executive need to find out. They recruit ex-Parisian and Bletchley Park codebreaker Harry Mitchell to return to the city he fled two years ago.