Season 9, Episode 4
A trio of highly skilled Chinese agents arrive in the UK to kidnap and assassinate Dr. Jiang, a scientist developing revolutionary desalination technology. Beth turns Kai, a diplomat in the Chinese embassy, into an asset. Lucas and Dimitri break into the Chinese embassy to steal information regarding the agents. Ruth goes undercover in the company's building to access their computers for Tariq. Then, Kai informs MI-5 of a bomb in the same building.