Code Name: Diamond Head (1977) — AI Story Visualization

Plot Analysis Summary

A covert agent uses a deceptive public persona to stop the theft and foreign sale of a lethal military gas.

Story Structure — 5 Plot Phases

The Gambler's Hidden Mission

Johnny Paul is introduced as a flashy gambler and ladies' man on O'ahu. His public persona conceals his identity as government agent Diamond Head.

Key Events

• Oahu Base — Johnny Paul lives on O'ahu, Hawai'i. Characters: Johnny Paul Location: O'ahu, Hawai'i
• Flashy Gambler Persona — Paul presents himself publicly as a flashy gambler. Characters: Johnny Paul Location: O'ahu, Hawai'i
• Ladies Man Image — His public identity also includes a reputation as a ladies' man. Characters: Johnny Paul Location: O'ahu, Hawai'i
• Diamond Head Revealed — Paul is secretly revealed to be government agent Diamond Head. Characters: Johnny Paul Location: O'ahu, Hawai'i
• Gas Theft Mission — Paul receives a mission to stop the theft of a lethal new gas. Characters: Johnny Paul Location: O'ahu, Hawai'i

The Deadly Military Secret

Paul's mission concerns a lethal gas capable of instant death upon contact. The substance was secretly developed by a Marine battalion at a Pentagon official's request.

Key Events

• Gas Theft Mission — Paul receives a mission to stop the theft of a lethal new gas. Characters: Johnny Paul Location: O'ahu, Hawai'i
• Contact Death Gas — The substance can cause instant death upon contact. Characters: Johnny Paul Location: Unspecified
• Marine Development Project — A top Marine battalion secretly develops the substance. Characters: Sean Donovan / Father Horton / Colonel Millard Butler Location: Unspecified Marine unit
• Pentagon Request — The gas is developed at the request of Pentagon official Colonel Millard Butler. Characters: Sean Donovan / Father Horton / Colonel Millard Butler Location: Pentagon
• Double Agent Infiltration — A double agent infiltrates the unit handling the secret project. Characters: Sean Donovan / Father Horton / Colonel Millard Butler Location: Marine unit

Murder Behind The Identity

A double agent infiltrates the military unit, kills Colonel Millard Butler, and assumes his identity. The theft becomes connected to a broader betrayal.

Key Events

• Double Agent Infiltration — A double agent infiltrates the unit handling the secret project. Characters: Sean Donovan / Father Horton / Colonel Millard Butler Location: Marine unit
• Colonel Butler Murdered — The infiltrator kills Colonel Millard Butler. Characters: Sean Donovan / Father Horton / Colonel Millard Butler Location: Unspecified
• Identity Assumed — After the murder, the double agent assumes Butler's identity. Characters: Sean Donovan / Father Horton / Colonel Millard Butler Location: Unspecified
• Secrets Become Target — Paul's mission centers on preventing the theft of the gas secrets. Characters: Johnny Paul Location: O'ahu, Hawai'i
• Tree Identified — The double agent is known by the pseudonym Tree. Characters: Johnny Paul Location: O'ahu, Hawai'i

The Cover Is Tested

Paul uses his gambler persona to approach the double agent known by the pseudonym Tree. His undercover strategy fails when his real identity is exposed.

Key Events

• Persona Used Operationally — Paul uses his gambler persona as part of his covert approach. Characters: Johnny Paul Location: O'ahu, Hawai'i
• Approaching The Agent — Paul attempts to get close to the double agent through his cover identity. Characters: Johnny Paul Location: O'ahu, Hawai'i
• Cover Blown — Paul's secret-agent cover is exposed. Characters: Johnny Paul Location: O'ahu, Hawai'i

Race Against The Sale

With his cover blown, Paul races to stop the lethal-gas secrets from being sold to an unnamed foreign power. The provided synopsis ends at this urgent climax.

Key Events

• Race Against Time — Once exposed, Paul faces a race against time to stop the sale. Characters: Johnny Paul Location: Unspecified
• Foreign Buyer Revealed — The double agent intends to sell the secrets to an unnamed foreign power. Characters: Johnny Paul Location: Unspecified
• Stopping The Sale — Paul races to prevent the transfer of the lethal-gas information. Characters: Johnny Paul Location: Unspecified
• Lethal Threat Unresolved — The provided plot ends with Paul's urgent attempt to stop the dangerous sale. Characters: Johnny Paul Location: Unspecified

Story Breakdown

• Public Identity — Johnny Paul's outward lifestyle disguises his professional role.
  • Flashy Gambler — Paul lives publicly as a flashy gambler on O'ahu.
  • Secret Agent — His hidden identity is government agent Diamond Head.
• Deadly Assignment — Paul is tasked with preventing the theft of an exceptionally dangerous substance.
  • Lethal Gas — The gas can cause instant death upon contact.
  • Stolen Secrets — The mission concerns preventing the theft of the gas's secrets.
• Military Development — The secret weapon originates in a military research effort.
  • Marine Battalion — A top Marine battalion secretly develops the substance.
  • Pentagon Request — Colonel Millard Butler requests the development through the Pentagon.
• Double Agent Plot — An infiltrator transforms the military project into a conspiracy.
  • Unit Infiltration — A double agent penetrates the unit handling the secret project.
  • Stolen Identity — The infiltrator kills Butler and assumes his identity.
• Covert Pursuit — Paul turns his public image into an operational tool.
  • Approaching Tree — Paul uses his persona to get close to the double agent known as Tree.
  • Cover Exposed — The operation changes when Paul's secret identity is discovered.
• Foreign Sale Threat — The conspiracy reaches an international crisis involving the lethal-gas secrets.
  • Unnamed Buyer — The double agent intends to sell the secrets to an unnamed foreign power.
  • Final Race — Paul races against time to prevent the sale.

Directed by

Jeannot Szwarc

Key Cast

• Roy Thinnes — Johnny Paul
• France Nuyen — Tso-Tsing
• Zulu — Zulu
• Ward Costello — Captain Macintosh
• Don Knight — H.K. Muldoon