Alfredo Scappaticci - Stakeknife ?

On 11 May 2003, Alfredo Scappaticci was accused by the British media , as being a high-level British FRU agent in the Provisional Irish Republican Army, known by the codename "Stakeknife".

The intelligence operator who does know the true identity of "Stakeknife" is his handler in the FRU Captain Margaret Walshaw. (it is illegal to publish her name in the UK).

Captain Walshaw also ran British FRU agent Brian Nelson and supervised his murderous activities for years. At the time she was a non commissioned officer (sergeant) in Britain’s Intelligence Corps, but she has since been promoted.