Murderers’ Row

The film opens with a dramatic display of a scale Capitol model being destroyed as a demonstration of BIG O's heliobeam weapon. The weapon's destructive potential is revealed and the secret organization outlines its goal of world domination. This opening sequence establishes the stakes and the enemy Matt Helm will face.

To investigate the BIG O plot without tipping them off, Helm fakes his own death and enters the investigation in disguise. He must uncover the conspiracy against ICE and locate the missing Dr. Solaris. His undercover status sets the tone for the globe-trotting pursuit to come.

Helm meets his boss Mac for a mission briefing and learns the scope of the operation. He is tasked with rescuing Solaris, or killing him if rescue proves impossible, and with avoiding BIG O brainwashing if captured. He is instructed to work under the alias James A. Peters to maintain his cover.

Arriving on the French Riviera, Helm assumes the alias Jim Peters, posing as a Chicago gangster to blend in. He receives a gun and a Ballantine's bottle that contains a taped message from Mac, foreshadowing the deception ahead. He begins tracing Solaris's whereabouts along the coast.

At a local discotheque, Helm meets Suzie and they dance as she becomes entangled with the mission. Suzie is arrested and framed for a murder, while Helm is not identified in the police line-up and is released. The episode introduces Suzie as an ally who will aid Helm against the Riviera's dangers.

Helm is taken at Marseille's harbor to meet Julian Wall and is whisked to Wall's island hideout by hovercraft. He is imprisoned there, but launches an escape, defeats Wall's henchman Ironhead, and steals a hovercraft back to the mainland.

Back on Wall's island, Solaris is tortured by Wall to extract the weapon's operative secret. Suzie is used as leverage and also tortured, while Helm is subjected to a giant shaker device intended to kill him. Solaris eventually yields the essential details under pressure.

Helm and Suzie escape their binds and end up in a dockyard where Helm battles Ironhead. Suzie then uses a giant magnetic crane to lift Ironhead into a vulnerable position, turning the tide of the confrontation. The duo escapes toward safety with renewed purpose.

The duo return to the Riviera scene, driving the hovercraft toward the disco where Suzie is wearing a booby-trapped brooch. Helm rips it from her and hurls it at the wall, where it explodes beside a Frank Sinatra poster as Helm quips, 'Sorry Frank.'

Helm and Suzie are pursued along the road by Ironhead, who shoots at them as they attempt to escape in a vehicle. Ironhead's car goes over a cliff, though he miraculously survives the crash. The chase underscores the constant danger from Wall's henchmen.

On open water a final duel unfolds between Helm and Wall aboard two separate hovercraft. Wall seizes Helm's trick gun, which has a ten-second delay, and fires it at himself in confused bravado. Helm's resourcefulness prevails as he defeats Wall.

With Solaris's weapon neutralized, Helm and Suzie prevent the heliobeam from destroying Washington, D.C. The city is saved as BIG O's global threat is thwarted and Helm completes his mission.