Episode 5 airs at 9pm tomorrow night on BBC One and sees Harry kidnap his former Cold War colleague, CIA agent Jim Coaver.

Harry soon realises that he’s been looking in the wrong place and Jim is possibly the innocent party. But if so, where does the real villain lie?

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In this clip, Ruth questions Harry’s motives when he acts on his suspicions about Jim Coaver…

Are you looking forward to the episode? Let us know below…