'Albert Entwistle was a postman.It was one of the few things everyone knew about him. And it was one of the few things he was comfortable with people knowing . . .'

Living alone since the death of his mam, 64-year-old Albert Entwistle keeps himself to himself. So one frosty December morning, just back from delivering mail full of the Christmas cheer that no one now extends to him, Albert is surprised to find himself in receipt of a letter.

The contents shock him. With no friends, and nothing to look forward to, his future suddenly seems lonely and frightening.

It's not the first time that Albert has received a letter that will change his life. But, as the snow starts to fall, this time around he's spurred into action. The time has come for him to face the secret he's been keeping for fifty years.