CLICK HERE to buy Doctor Who - The Companion Chronicles: Find and Replace.

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Find and Replace: Christmas 2010, and Jo Grant finds herself stuck in a department store elevator with an alien creature called Huxley.

Huxley is a narrator from Verbatim Six, and he is here to let Jo revisit the best time of her life – when she was the plucky companion to that eccentric Space/Time traveller known only as... Iris Wildthyme.

Confronted with memories she knew nothing about, Jo agrees to a meeting with Iris inside her transdimensional bus, and together the three of them take a trip back in time. Back to the 1970s, to UNIT HQ, and a meeting with the only person who knows the whole truth...

The Rocket Men: The TARDIS has landed on Platform Five, a floating city in the sky of the planet Jobis, and for a time the Doctor, Ian, Barbara and Vicki get the chance to enjoy this idyllic place.

And then the Rocket Men arrive, led by the sadistic Ashman.

When the only other option to certain death is suicide, Ian Chesterton takes the gamble of his life…

But what about the little-known 13th day of Christmas...?