Nuclear parable by Anthony Garner set in a remote Welsh valley which, due to a climatic quirk, has been left virtually untouched by a nuclear attack that has devastated the rest of Britain.

Teenager Ann Burden has been alone since her parents left to seek a new life and never returned. Ann has learnt how to survive and has built a life for herself within the valley. Then scientist John Loomis, sole male survivor of the holocaust, arrives at the valley in his prototype plastic radiation capsule.

The play traces their developing relationship which ends in tragedy when Loomis contracts radiation sickness after bathing naked in a contaminated stream.

Star Anthony Andrews had to endure a four-hour make-up job to present a convincing portrait of a radiation-ravaged victim.

The idea of an enclave untouched by the holocaust was not a new one. It had been explored in Marghanita Laski's 1959 BBC play The Offshore Island.