As was standard practice with Stakeknife, if a person being interrogated by him didn't present a threat to his personal position, then he would interrogate and vacate the scene, his particular job completed. On the other hand, if he felt his position was threatened then he would have to eliminate that threat, which in this case meant Joe Fenton couldn't possibly reach Brendan Hughes and tell him about the treachery of the men in charge of the ISU.
Having gone back upstairs and grabbing Fenton by the scruff of the neck, both men struggled on the staircase as Scappaticci dragged him into the street. As far as an IRA operation went, this was bizarre and completely unconventional, indicating that Scappaticci had to dispatch Fenton into the afterlife himself for fear he might reveal his secret.
While being force marched toward the Glen Road bus terminus, Fenton suddenly broke free and attempted to escape, but Scappaticci immediately shouted to his armed IRA accomplice to open fire, which he did, hitting him in the back and felling him. With Scapatticci standing over a badly wounded British agent, he ordered the gunman to finish him off with 3 shots to the head. Joe Fenton lay dead, along with his secret about Stakeknife.
After leaving the execution site Scappaticci immediately phoned his handler and briefed him on what had just happened. Speaking on the phone, he explained that he had no choice but to kill Joe Fenton himself, as Fenton had found out that he, Scappaticci, was a British agent, like himself. He felt his cover had been blown. Ten minutes later the RUC received a call about a body lying on the Glen Road.
When the news reached Dublin, Brendan Hughes went apoplectic and immediately enquired as to the reason why Fenton had been shot dead out of hand. The reply from Scappaticci was that there was ' too much Brit activity in the area', which meant Fenton couldn't be transported to Hughes.
Brendan Hughes did not believe this feeble excuse, realised Belfast was rotten, became frightened for his life and resigned from the Army he loved.
The controversy surrounding the execution of Joe Fenton resulted in an IRA Court of Inquiry which took place in Letterkenny, County Donegal, chaired by the Northern Command operations officer. One of the most pressing questions which was raised at the Inquiry was why Fenton was not delivered to Hughes and his staff, which drew attention to Scappaticci and the ISU. The outcome was that new 'checks and balances' would be introduced thereby limiting the authority of the Internal Security Unit to execute so freely.


















