Or
Enter your email address and we'll send you a link to reset your password.
This is a modal window.
Beginning of dialog window. Escape will cancel and close the window.
End of dialog window.
At the end of the Seventies, the IRA built its own internal security system to root out informers. But British intelligence found a fatal flaw that unlocked many of the IRA’s secrets.
You must create an account to continue watching