Former MI5 operative decommissioned by Harry. Recruited to track Harry down after his faked suicide. Investigates the suspected MI5 traitor alongside June Keaton. Initially arrests Harry to protect him, but later joins forces with June to kill Adem Qasim and his operatives at MI5 headquarters.
Harry was Will's former senior officer within MI5.
Will worked with Harry for several years before Harry decommissioned him.
Will becomes a direct opponent of Qasim's terrorist operation.
Will works with others to kill Qasim and his armed operatives during the headquarters attack.
Hannah and Will cooperate across recruitment, deception, and emergency intervention.
Hannah recruits Will in Moscow, later joins Harry and Will's operation, and acts on Will's demand to call in SCO19.
Will treats Vass as a possible participant in the prisoner-transport conspiracy.
Will investigates the flat of operation lead Robert Vass and finds incriminating evidence before Vass returns.
Will acts within an MI5 chain of command led by Mace.
Mace directs the effort to bring Harry in, while Will is tasked with locating Harry.
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