IRA spycatcher Freddie Scappaticci has been outed as FRU agent Stakeknife – but he’s not going to disappear without a fight. The British state takes unprecedented measures to make sure their spy gets away with murder. Cara teams up with veteran reporter John Ware to reveal just how high up the cover-up goes. Their reporting leads to a key organisation that has so far remained in the shadows: MI5.

Archive in this episode: Getty, Parliament TV

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