In 2006, British Intelligence were convinced that two people they were surveilling were part of an active Al-Qaeda terror cell. They were about to discover the scale of their plotting.
It was the largest surveillance operation in British history, involving 800 agents monitoring 24 suspects around the clock in order to thwart a fiendish terrorist plot. Host Damian Lewis examines the 2006 joint investigation between MI5, London's Metropolitan Police Counter-Terrorism Unit, and the CIA to track down a homegrown Al Qaeda cell in east London and stop its plan to blow up multiple U.S.-bound passenger planes using liquid bombs.
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