Writers Musa Okwonga and Sophie Heawood share their favourite books with Harriett Gilbert. Musa chooses The Bone Readers by Jacob Ross, a crime novel set in the Caribbean, while Sophie picks Lunch Poems, a collection by Frank O'Hara written on the streets of New York. Presenter Harriett Gilbert introduces them to An Experiment in Love by Hilary Mantel, written before her Booker-winning Wolf Hall trilogy