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The team faces their toughest challenge ever: tracking down Lucas North, their Section Chief, friend and one of the best agents MI5 has ever had. Harry decides the team are too close, and brings in a specialist to help with the hunt. But it will not be easy to find a man who has nothing left to lose, and as the search becomes increasingly desperate, Harry and Lucas become embroiled in a deadly game of cat and mouse.
First Air Date : May 13, 2002
Last Air date : Oct 23, 2011
Episode : 86 Episode
Season : 10 Season
Runtime: 60:14 minutes
Studio: BBC One
Country: United Kingdom