Spooks Season 9 Episode 4

When a highly skilled trio of Chinese agents arrive in London for 48 hours only, the team must find out why they are here.nnRuth goes undercover in a major scientific research corporation where one Chinese scientist, Jiang, proves to be the ultimate prize.nnBeth activates an asset from the Chinese Security Services to be Section D’s mole on the inside, but has she activated him too soon?nnLucas makes a decision that could change his course forever.