Poet Sophie Hannah recommends The Rose and the Yew Tree, a book that Agatha Christie wrote under the pseudonym Mary Westmacott. Writer and comedian Viv Groskop opts for The Heart of a Dog by Mikhail Bulgakov, a 1920s satire about science gone very wrong, and Harriett Gilbert champions Eileen Atkins' recent memoir Will She Do? which charts the first 30 years of the actress's life