The Fourth Arm

Hitler's first 'secret weapon' the V-1, is about to be launched against Britain. It must be halted or restrained ... somehow.

A special team has to be selected for the operation. They come from all walks of life.

The selected recruits are given a map reference at which to rendezvous. Getting there proves to be hazardous.

The training of the team commences. They begin to emerge as individuals.

Parachute training starts. There is a suspicion that a double-agent has been infiltrated into the team.

A possible way into the VI storage dump has been found. But plans of the place are needed to ensure success. An exercise is mounted.

The selected team are engaged for the first time in the real thing; an operation in France. The question of Portales' loyalty is resolved.

Major Gallagher discovers a novel, but practical, way to cross the minefield and the electrified barbed wire fence which surrounds the German bomb dump.

The strain of intense training and close confinement begins to affect the squad. Tempers flare and even the best of friends quarrel as the deadline for the official selection of the team approaches.

The team is given a detailed briefing for the attack on the German bomb dump. One of them opts out and the entire operation faces failure.

The selected team have been briefed about their target. They all recognise the importance of the raid and that their chances of survival are limited.

Gallagher and his team have gained access to the German underground complex, their entry has been discovered.