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Summary
While a deadly hacker turns Britain upside down, Danny decides weather to reveal all to Will, MI5 hunts the source down to an Islamic mosque with the help of Mi5's best computer programmers. But things get suspicious when Ruth, close onto the tail of the hacker, goes missing and so does a member of the special team...
Episode Guide
Season 01
Season 02
Season 03
Season 04
Season 05
Season 06
Season 07
Season 08
Season 09