Leslie S. Klinger is considered to be one of the world's foremost authorities on those icons of the Victorian era, Sherlock Holmes, Dracula, and Frankenstein. He is the editor of the three-volume collection of the short stories and novels, THE NEW ANNOTATED SHERLOCK HOLMES, published by W. W. Norton in 2004 and 2005, winner of the Edgar Award for Best Critical/Biographical Work and nominated for every other major award in the mystery genre. THE NEW ANNOTATED DRACULA, published by W. W. Norton in 2008, offers a similar in-depth examination of Bram Stoker's haunting classic and its historical context. It received a starred review in Publishers' Weekly.

Since the 1960s, the study of the rich fantastic literature of the Victorian writers has been Klinger's consuming passion. He has written dozens of articles on Sherlockiana, published 20 books on Sherlock Holmes in addition to the Norton work, and regularly teaches UCLA Extension courses on "Sherlock Holmes and His World" and "Dracula and His World." Klinger's Sherlock Holmes Reference Library has been called by the Baker Street Journal "the standard text of reference for all serious Sherlockians." He contributed essays to Playboy Magazine and the Times of London on vampires and served as the technical adviser for Warner Bros. on the "Sherlock Holmes" films starring Robert Downey, Jr. and Jude Law.

Klinger has edited several anthologies of stories relating to Holmes, vampires, horror, and Victorian fiction, including "In the Shadow of Dracula" and "In the Shadow of Sherlock Holmes" for IDW Books and "In the Shadow of Edgar Allen Poe" for Pegasus Books. He has also co-edited with Laurie R. King four anthologies of new stories about Sherlock Holmes, "A Study in Sherlock," the Anthony-winning "In the Company of Sherlock Holmes," "Echoes of Sherlock Holmes," and "For the Sake of the Game." The four-volume "The Annotated Sandman" in collaboration with Neil Gaiman for DC Entertainment appeared in 2012-14, and his "Watchmen: Annotated Edition" was published by DC Entertainment in 2017. Also in 2017, his "New Annotated Frankenstein," published by W. W. Norton, was nominated for a World Fantasy Award. Klinger's "The New Annotated H. P. Lovecraft," shortlisted for the Bram Stoker Award, appeared in 2014, and a second volume, "New Annotated H. P. Lovecraft: Beyond the Mythos" will be published by Norton in 2019.

Klinger and co-editor Laura Caldwell just completed "ANATOMY OF INNOCENCE: TESTIMONIES OF THE WRONGFULLY CONVICTED," published by Liveright Publishing/W. W. Norton in 2017. This harrowing anthology pairs exonerees with major mystery/thriller writers to tell their tales of despair, hope, and courage. A nonprofit project, proceeds from the book benefit innocence projects.

In 2018, Klinger published "Classic American Crime Fiction of the 1920s," a massive annotated collection of five novels, including the first Charlie Chan mystery, the first Ellery Queen mystery, the first Philo Vance mystery, Dashiell Hammett's first novel, and "Little Caesar," the first gangster novel. The book was awarded the Edgar for Best Critical/Biographical and is nominated for several other awards.

Later in 2019, Neil Gaiman's "Annotated American Gods," edited with notes by Klinger, will appear from William Morrow.

Born in Chicago, Illinois, Klinger received an AB in English from the University of California, Berkeley, followed by a JD from Boalt Hall (School of Law, U.C. Berkeley). Since then, he has lived in Los Angeles, pursuing a legal career in tax, estate, and business planning. Klinger is a member of the Baker Street Irregulars, the Horror Writers Association, and the Mystery Writers of America. He served for three years as the chapter president of the SoCal Chapter of MWA and on its National Board of Directors, and he is the Treasurer of the Horror Writers Association.