Leonard Rosen grew up in Baltimore, Maryland, where he taught high school English. Graduate studies in literature followed, and he went on to a university teaching career.  Len writes full time now in the Boston area.  He has contributed radio commentaries to Boston’s NPR station, written best-selling textbooks on writing, and taught writing at Harvard University and Bentley University. The Tenth Witness is a prequel to his award-winning first novel, All Cry Chaos.  Both feature Interpol agent Henri Poincaré, “a protagonist,” wrote one critic, “who reads like a literary figure in a thriller.”  Contact Len through this Web site to arrange for a web-based visit to your book group and to find book-related events, essays on writing, and a sampling of his radio commentaries.