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Synopsis:
The American president makes an unscheduled trip to Britain, forcing MI5 to work with the CIA to ensure his safety throughout the visit. Tom and Christine are thrown together, and it soon appears there's more to their relationship than just work - but with each new threat turning the operation into a power struggle between the rival organisations, they need to keep their minds firmly on the job
Starring:
Keeley Hawes as Zoe Reynolds, Matthew Macfadyen, Peter Firth as Harry Pearce, Hugh Simon as Malcolm Wynn-Jones, David Oyelowo, Rory MacGregor as Colin Wells, Shauna MacDonald as Sam Buxton, Nicola Walker as Ruth Evershed, Natasha Little, Megan Dodds as Christine Dale
