As the collection leaves the museum a fighter plane is taxied out of the hangar and explosives wheeled out on the tarmac.

Paul breaks his promise and The Master tells China that he wants these children back.

Alison rings Paul from a phone box asking for Stevens but when Paul confirms he is missing from the hotel Alison has gone.

Frazer receives instructions, Paul and Robert take a photograph.

A blood-stained handkerchief with a letter 'A' embroidered - a machine-gun bullet - and Paul realises he is being followed.

A squadron reunion at a pleasant country inn and the beginning of strange events at a nearby disused airfield.