Mary Russell and Sherlock Holmes turn the Riviera upside-down to crack their most captivating case yet in the New York Times bestselling series that Lee Child called "the most sustained feat of imagination in mystery fiction today." It's summertime on the Riviera, where the Jazz Age is busily reinventing the holiday delights of warm days on golden sand and cool nights on terraces and dance floors. Just up the coast lies a more traditional pleasure...

"Mary Russell and Sherlock Holmes, hoping for a respite in the French countryside, are instead caught up in a case that turns both bewildering and intensely personal After their recent adventures in Transylvania, Russell and Holmes look forward to spending time with Holmes' son, the famous artist Damian Adler, and his family. But when they arrive at Damian's house, they discover that the Adlers have fled from a mysterious threat. Holmes rushes after...