Split Loyalties Spooks : Season 7 Episode 2
TV-14 (self-applied) BBC One 1h 00m int(0)
Aired: October 27th, 2008 @ 9:00 PM EST on BBC One
Harry vows revenge by taking down the head of Russia's intelligence service in Britain with the help of Lucas North. Lucas's loyalties, however, are secretly no longer with MI5 and he exploits Harry's trust to help a Russian submarine destroy Britain's communications system, causing financial and social chaos.