From the day of their debut, when Matilda smoked a cheroot and Margo tied a cherry stem in a knot with her tongue, the Halifax twins have flouted convention at every turn. But when Matilda runs off with the dangerous Marquess of Ashford she may finally have gone too far. Determined to stop her sister's inexplicable elopement, Margo turns to her oldest friend for help: because if anyone can get her to Scotland in time, it's starchy solicitor Henry Mortimer. But beneath his buttoned-up exterior, Henry is ardently, wildly, miserably in love with Margo. And Matilda and Ashford's relationship too may not be quite what it seems...