It’s almost 50 years since Tom Baker’s first season took the Doctor, Sarah and Harry out into space, to the future of Earth and the birth of the Daleks. The Curse of Time follows on from Revenge of the Cybermen, giving us a Season 12 style adventure set in medieval times.

“The TARDIS is diverted on its way to Scotland,” says producer David Richardson. “Jonathan Morris has written a smashing tale that fits perfectly into both the Nerva Beacon arc and the Philip Hinchcliffe years. Happy anniversary to the Fourth Doctor!”

Sadie Miller and Christopher Naylor join Tom’s fourth Doctor in the story of sinister monks and mysterious secrets. You can order a copy now from bigfinish.com (£15.99 for CD and download, £12.99 download only) but we have FIVE to give away. To be in with a chance of winning, just send us the answer to the following question:

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