The Incident of the Book in the Nighttime

Gemma Doyle and her friends have packed their bags and headed to London for her sister Pippa's wedding. Waiting for her in the hotel lobby is none other than Gemma's ex-husband, Paul Erikson. Paul has a rare book he wants her to see--calling it "the real deal"--so Gemma agrees to meet him at their old shop, Trafalgar Fine Books, the following day. But when Gemma arrives, accompanied by Grant, a rare book dealer, they find Paul dead in his office....