Actor Alistair Petrie and writer Alex Wheatle talk about their favourite books, in conversation with Harriett Gilbert. Alistair chooses Joan Didion's mediation on grief, The Year of Magical Thinking, which he finds unexpectedly uplifting, while Alex selects Robert Louis Stevenson's Treasure Island, a means of escape from the horrors of his childhood. Harriett discusses Men Don't Cry, by Faiza Guene