Spooks

Christine hands Tom a CIA document indicating that a terrorist cell is hiring Michael Karharias, an American assassin, to kill a member of the British Cabinet. Tom enlists the help of Danny and Zoe to catch Karharias. Danny follows Tom and finds he is creating a legend, something Tom denies. When they follow CIA agent Zeigler, the three are captured, where it appears their captors are working with Tom. Danny and Zoe are left to escape and inform Harry of what they believe; that Tom has become a traitor. Tom, meanwhile, learns that Zeigler is, in fact, Herman Joyce, a legendary CIA agent who holds Tom responsible for ruining his daughter's life?Tom recruited the daughter for an operation that went wrong, she is now at a psychiatric hospital?and is framing him for a planned assassination; Karharias was in fact killed by Joyce. Joyce's team tricks Tom into handling a Gepard M1 sniper rifle, which is later used to kill Chief of the Defence Staff Sir John Stone. Harry, Danny, and Zoe confront Tom and inform him that Joyce has been dead for five years. No longer believing his innocence, Harry is about to call for back-up, but Tom shoots him and disappears into the North Sea..