Multi-million bestselling author, Ken Follett, joins Simon and Matt for a natter about his latest novel 'Circle Of Days'.
They discuss skeletons, Stone Henge, Priestesses, the movement of the sun and stars, the origins of counting and measurements of time.
Ken is meticulous with his research and shares how he approached this book, as well as how he chose the language in the novel and the technological advancements.
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