剧情引见: SeasonsevenofBritishspythriller"MI-5"openswithAdamCarter(RupertPenry-Jones)valiantlybattlingtomoveacarbombawayfromadenselypackedmemorialservice.MeanwhileHarrysecuresthereleaseofLucasNorth(RichardArmitage),aMI-5officerimprisonedinRussiaforeightyears.It"snotlong,however,beforeRosbeginstosuspectLucas"loyalties.TherestoftheseasondealswithatopsecretColdWar-eraoperationnamedSugarhorse.