second episode series seven british espionage television series episode overall originally broadcast bbc october repeated channel bbc following day episode written head writer additional writing directed episode considered second story following preceding episode new episode sir determined carry revenge london head operations previous episode purposely withheld intelligence caused death team discover overseeing attack progress returned officer involved end stop attack harry kills include deleted scenes included final episode placed series official website episode attracted million viewers broadcast receiving generally positive reviews television critics plot hours following death sir discuss head operations london returns hotel room destroys fit rage morning harry asks refused harry decides promotes chief position previously held adam harry calls meet information lucas arrives calls warn harry coming later lucas appointed shocked find wife discovers communication burst coming north_sea believing russian submarine entering british waters carry mission learning man connections going shut company confirms suspicions russians planning attack britain breaking submarine communications cable shutting computer system country harry urges temporarily shut internet denied later breaks lucas flat away discovers lucas double agent feeding russians news know planned attack lucas brings thames house lucas admits russians promised released prison sooner reveals intends bring making trust lucas harry sends lucas learn cable submarine attack launch counterattack lucas able turn evidence mole russian embassy find submarine location launches counterattack seconds spare later arrested lucas visits home married home asks asset save arrest association end harry field states admiration adam sacrifice says resource final moments hands harry gun harry kills shot chest production episode written head writer additionally written plot episode influenced resurgence power russia following end cold war producers felt subtle ways threatening security west producers included scenes lucas adjusting outside world following years imprisonment emotionally damaged character audience realise struggling scenes include lucas struggling sleep bed soon resorts lying floor instead episode includes deleted scenes feature adam past scenes harry tells looking adam mother find death adam altered records lived harry visits wealthy estate worked told currently scene harry adam scenes included website broadcast reception episode originally broadcast digital channel bbc monday october day bbc viewing episode episode repeated bbc day later time slot bbc broadcast viewed audience share second seen night beaten episode bbc repeat seen million viewers cent previous episode won time slot broadcasts achieved total reach million according broadcasters episode received final viewing figures million bbc million bbc add million daily_telegraph stated yesterday shock demise series pin adam fans spy drama approaching second episode new series fear star deaths welcome lucas praised entire episode stating pace didn let start finish thing looked awesome acting pitch perfect dialogue drops realms parody phrase like diamond tight bright sparkling able cut deep adding series shaping classic noted performance second appearance looks sounds like liverpool echo reviewed episode episodes considered story stated packed great action sequences razor sharp writing usual twists turns treated excellent scenes shot moscow russians established villains series
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