Hailed for her rich and powerful works of psychological suspense as well as her New York Times bestselling mysteries, Laurie R. King now takes us to a remote cottage in Cornwall where a gripping tale of intrigue, terrorism, and explosive passions begins with a visit to a recluse upon whom the fate of an entire nation may rest—a man code-named ... Touchstone. It’s eight years after the Great War shattered Bennett Grey’s life, leaving him with an excruciating sensitivity to the potential of human violence, and making social contact all but impossible. Once studied by British intelligence for his unique abilities, Grey has withdrawn from a rapidly changing world—until an American Bureau of Investigation agent comes to investigate for himself Grey’s potential as a weapon in a vicious new kind of warfare. Agent Harris Stuyvesant desperately needs Grey’s help entering a world where the rich and the radical exist side by side—a heady mix of the powerful and the celebrated, among whom lurks an enemy ready to strike a deadly blow at democracy on both sides of the Atlantic. Here, among a titled family whose servants dress in whimsical costumes and whose daughter conducts an open affair with a man who wants to bring down the government, Stuyvesant finds himself dangerously seduced by one woman and—even more dangerously—falling in love with another. And as he sifts through secrets divulged and kept, he uncovers the target of a horrifying conspiracy, and wonders if he can trust his touchstone, Grey, to reveal the most dangerous player of all …. Building to an astounding climax on an ancient English estate, Touchstone is both a harrowing thriller by a master of the genre and a thought-provoking exploration of the forces that drive history—and human destinies.

In this thrilling new book New York Times bestselling author Laurie R. King, beloved for her acclaimed Mary Russell/Sherlock Holmes series, leads readers into the vibrant and sensual Paris of the Jazz Age—and reveals the darkest secrets of its denizens. Paris, France: September 1929. For Harris Stuyvesant, the assignment is a private investigator’s dream—he’s getting paid to troll the cafés and bars of Montparnasse, looking for a pretty young woman. The American agent has a healthy appreciation for la vie de bohème, despite having worked for years at the U.S. Bureau of Investigation. The missing person in question is Philippa Crosby, a twenty-two year old from Boston who has been living in Paris, modeling and acting. Her family became alarmed when she stopped all communications, and Stuyvesant agreed to track her down. He wholly expects to find her in the arms of some up-and-coming artist, perhaps experimenting with the decadent lifestyle that is suddenly available on every rue and boulevard. As Stuyvesant follows Philippa’s trail through the expatriate community of artists and writers, he finds that she is known to many of its famous—and infamous—inhabitants, from Shakespeare and Company’s Sylvia Beach to Ernest Hemingway to the Surrealist photographer Man Ray. But when the evidence leads Stuyvesant to the Théâtre du Grand-Guignol in Montmartre, his investigation takes a sharp, disturbing turn. At the Grand-Guignol, murder, insanity, and sexual perversion are all staged to shocking, brutal effect: depravity as art, savage human nature on stage. Soon it becomes clear that one missing girl is a drop in the bucket. Here, amid the glittering lights of the cabarets, hides a monster whose artistic coup de grâce is to be rendered in blood. And Stuyvesant will have to descend into the darkest depths of perversion to find a killer . . . sifting through The Bones of Paris.