The Fourth Protocol (1987) — AI Story Visualization

Plot Analysis Summary

An investigation into a covert nuclear false flag exposes both an international conspiracy and the cynical power politics surrounding it.

Story Structure — 5 Plot Phases

Files Beneath The Surface

Preston discovers forbidden NATO files in Berenson's residence and reports the leak to Irvine. His unauthorized methods provoke Harcourt-Smith, who removes him from important MI5 work.

Key Events

• The Fourth Protocol Established — An agreement forbids unconventional nuclear delivery to a target. Location: East-West diplomatic setting
• Preston Enters Berenson's Residence — Preston breaks in on New Year's Eve and discovers misplaced NATO files. Characters: John Preston, George Berenson Location: George Berenson's residence
• The Leak Reaches Irvine — Preston reports the suspicious files, and Irvine handles the leak. Characters: John Preston, Sir Nigel Irvine Location: British Secret Service offices
• Preston Is Reassigned — Harcourt-Smith punishes Preston by sending him to Airports and Ports. Characters: John Preston, Brian Harcourt-Smith Location: MI5 offices

The Polonium Trail

Petrofsky enters Britain with a covert plan to violate the Fourth Protocol. Preston finds polonium after a Soviet sailor's death, but institutional resistance threatens to end his investigation.

Key Events

• Petrofsky Receives His Mission — Petrofsky is sent to Britain for an operation violating the Protocol. Characters: Valeri Petrofsky / James Edward Ross, Borisov, General Karpov Location: Soviet security offices
• Borisov Raises His Complaint — Borisov protests the loss of resources and Petrofsky from his department. Characters: Borisov, General Karpov, Valeri Petrofsky / James Edward Ross Location: Karpov's office
• Karpov Learns The Real Plan — Karpov discovers the false-flag nuclear plot and its political purpose. Characters: General Karpov, Valeri Petrofsky / James Edward Ross Location: Soviet intelligence offices
• The Polonium Disk Is Found — After a Soviet sailor dies fleeing a port guard, Preston finds polonium among his possessions. Characters: John Preston Location: Glasgow port
• Harcourt-Smith Suspends Preston — Harcourt-Smith rejects Preston's warning, while Hemmings and Irvine support him. Characters: John Preston, Brian Harcourt-Smith, Sir Bernard Hemmings, Sir Nigel Irvine Location: MI5 offices

A Device Built On Lies

Preston follows the trail through Winkler while Petrofsky and Irina assemble the nuclear device. Irina secretly changes the timer, and Petrofsky kills her after discovering her betrayal.

Key Events

• Preston Follows Winkler — Preston identifies Winkler and follows the known Czech KGB agent from the airport. Characters: John Preston Location: Airport
• The Bomb Team Meets — Petrofsky and Irina meet under the cover of a false marriage. Characters: Valeri Petrofsky / James Edward Ross, Irina Vassilievna Location: Petrofsky's temporary house
• The Device Is Assembled — Irina guides Petrofsky in assembling the device and sets a two-hour delay. Characters: Valeri Petrofsky / James Edward Ross, Irina Vassilievna Location: Petrofsky's temporary house
• Irina Resets The Timer — Irina secretly resets the delay to zero under separate orders. Characters: Valeri Petrofsky / James Edward Ross, Irina Vassilievna Location: Petrofsky's temporary house
• Irina Is Killed — Irina discovers Petrofsky's order against her and is killed before warning him. Characters: Valeri Petrofsky / James Edward Ross, Irina Vassilievna Location: Petrofsky's temporary house

Baywaters Under Threat

Preston tracks Petrofsky to Ipswich and identifies RAF Baywaters as the intended target. The timer's alteration creates a final crisis beside the military base.

Key Events

• Petrofsky Contacts Winkler — Petrofsky is observed contacting Winkler after Irina's death. Characters: Valeri Petrofsky / James Edward Ross Location: Ipswich
• Preston Identifies The Target — Preston tracks Petrofsky and realizes RAF Baywaters is the intended target. Characters: John Preston, Valeri Petrofsky / James Edward Ross Location: Ipswich and RAF Baywaters
• The House Beside Baywaters — Preston locates Petrofsky's house directly next to the military base. Characters: John Preston, Valeri Petrofsky / James Edward Ross Location: House beside RAF Baywaters
• The Timer Betrays Petrofsky — Petrofsky checks the device and discovers that the timer has been reset to zero. Characters: John Preston, Valeri Petrofsky / James Edward Ross Location: House beside RAF Baywaters
• The Baywaters Assault — An SAS team storms the house; Preston subdues Petrofsky before he is shot. Characters: John Preston, Valeri Petrofsky / James Edward Ross Location: House beside RAF Baywaters

The Price Of Control

An SAS assault stops the device, but Petrofsky is killed rather than captured. At Hemmings' funeral, Preston recognizes Irvine and Karpov's cynical cooperation and returns to his son.

Key Events

• The Funeral Reveals The Plot — Preston confronts Irvine and Karpov's covert power play, then reunites with Tom. Characters: John Preston, Sir Bernard Hemmings, Sir Nigel Irvine, General Karpov, Tom Location: Hemmings' funeral

Story Breakdown

• Treaty And Threat — The Fourth Protocol establishes the rule whose violation drives the conspiracy.
  • Nuclear Prohibition — The agreement forbids unconventional nuclear delivery.
  • False Flag Objective — The planned attack is designed to resemble an American accident.
• Preston Finds Evidence — Preston's unauthorized investigation uncovers the first signs of a hidden operation.
  • Berenson Files — Preston finds top-secret NATO files in Berenson's residence.
  • Irvine Briefing — He reports the leak to Sir Nigel Irvine.
• Institutional Resistance — MI5 bureaucracy obstructs Preston while a few senior figures continue to trust him.
  • Airports Assignment — Harcourt-Smith demotes Preston after the unauthorized break-in.
  • Suspension And Support — Harcourt-Smith suspends Preston, while Hemmings and Irvine support his work.
• Soviet Operation — Petrofsky carries out a covert mission intended to reshape British and American politics.
  • Petrofsky Mission — Petrofsky enters Britain to violate the Fourth Protocol.
  • Karpov Investigation — Karpov quietly learns the purpose of the unsanctioned mission.
• Polonium Trail — A physical component and a network of agents allow Preston to connect the clues.
  • Glasgow Discovery — Preston finds a polonium disk after a Soviet sailor dies.
  • Winkler Pursuit — Preston follows Winkler from the airport and tracks the network.
• Betrayal Inside — The bomb team is undermined by conflicting orders and concealed loyalties.
  • Device Assembly — Irina helps Petrofsky assemble the nuclear device.
  • Timer Double Cross — Irina resets the delay to zero and is killed by Petrofsky.
• Baywaters Confrontation — Preston identifies the target and reaches the bomb site during the final crisis.
  • Target Identified — Preston realizes RAF Baywaters is the intended target.
  • House Assault — The SAS storms the house and Preston disables Petrofsky.
• Cynical Resolution — The physical threat ends, but the final revelation concerns political manipulation within the services.
  • Petrofsky Executed — Petrofsky is killed instead of being retained for questioning.
  • Funeral Power Play — Preston confronts Irvine and Karpov before reuniting with Tom.

Directed by

John Mackenzie

Key Cast

• Michael Caine — John Preston
• Pierce Brosnan — Valeri Petrofsky / James Edward Ross
• Ned Beatty — Borisov
• Joanna Cassidy — Irina Vassilievna
• Julian Glover — Brian Harcourt-Smith