IRA mole linked to at least 18 murders in North

Many of the victims also worked for British Intelligence and were apparently sacrificed to protect the identity of Freddie Scappaticci, code-named ‘Stakeknife’, so he could continue to spy for British Intelligence.
A BBC Panorama investigation reveals that Scappaticci, from an Italian immigrant family, doubled as a British agent and the IRA’s top spy-catcher.