Julia Armfield’s mixture of marine horror, love, loss and scaly skin, Our Wives Under the Sea, is our book this week. She tells Graham about the challenges of writing about six months in a submarine and our clubbers decide if they’re on the crest of a wave or plumbing the depths. Plus, Spooks partners Nicola Walker and Richard Armitage team up again to bring his own audiobook, Geneva, to life and we have loads of recommendations – from chart toppers to Sara Collins on books that really take you places.