If the Fourth Protocol is ever breached, there would be no warning, just a nuclear explosion from a bedsitter...The unthinkable has just begun...

James Bond star Pierce Brosnan is on the enemy side in this high-tension thriller as Petrofsky, a charismatic KGB agent who has infiltrated the UK on the most explosive of missions. The stakes could not be higher: the Russians plan to shatter the special relationship between Britain and America by detonating a nuclear bomb on UK soil - right next to an American military base. The only man with the skill and knowledge to stop Petrofsky is maverick British agent John Preston (Oscar-Winner Michael Caine). But Preston is in disgrace and out on a limb - and the bomb is ticking...Based on the bestseller by Frederick Forsyth and directed by John MacKenzie (The Long Good Friday).