Based on a short story by John Wyndham, this new drama tells the story of Colin Trafford, a scientist knocked unconscious in a botched experiment. Waking up in a parallel world, he is amazed to find himself with a new life - and a new wife.

But Colin's idyll is shattered when he wakes again only to be told that the new love of his life was just a coma-induced fantasy. Unable to accept what's happened, he vows to prove the reality of his parallel life, risking ridicule and madness in the process.

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