Recommended by bookseller Karin Scherer: 'I have been a big fan of Iain Pears since his ground-breaking novel An Instance of the Fingerpost. The new novel is possibly even more challenging – three interlocking worlds, four people searching for answers. We move from 1960s Oxford to a different world but is it the future or the past? We find ourselves in a land of storytellers but is this world real? Meanwhile in the future the notion of time travel is researched – but could it have devastating consequences for past, present and future? Prepare yourself for a real imaginative roller coaster!'