There was a rather disturbing moment at what I assumed was the beginning of episode three of this 10-part tour of the world of contemporary storytelling (6-17 July) when an earnest male voice began to read from The Girl on the Train. Surely, I asked myself, that beacon of erudition and discernment, Marina Warner, has not been reduced to making programmes about best-selling novels? Happily, this turned out to be an advertisement for the following week’s Book at Bedtime: shortly afterwards Warner was on hand to inform us what Sylvia Plath thought about death, and all was well.The chairwoman of this year’s Man Booker International Prize began her investigation into the craft of fiction with an account of her own childhood fondness for “stories”. This, she claimed, had