‘What theory?’ said Robin sharply, and Strike noted that even halfway down the bottle of champagne, with her marriage in splinters and a box room in Kilburn to look forward to, Robin’s interest in the case remained as acute as ever. ‘Remember when I told you I thought there was something big, something fundamental, behind the Chiswell business? Something we hadn’t spotted yet?’ ‘Yes,’ said Robin, ‘you said it kept “almost showing itself”.’ ‘Well remembered.