The second book in the bestselling, critically-acclaimed, optioned-for-film Mystery & Thriller series. “Stirring and imaginative . . . the reader [is] in for a wild ride.” - Steve Berry, New York Times bestselling writer At a mausoleum in Cairo’s most notorious cemetery, a mercenary receives a package containing a silver test tube suspended in hydraulic stasis. An investigative reporter tracking rogue biomedical companies is terrified by the appearance of a mummified man outside her Manhattan apartment. A Bulgarian scientist who dabbles in the occult makes a startling discovery in his underground laboratory. These seemingly separate events collide when private investigators Dominic Grey and Viktor Radek are hired by the CEO of an Egyptian biomedical firm to locate stolen research integral to the company’s new life extension product. However, after witnessing the slaughter of a team of scientists by the remnants of a dangerous cult thought long abandoned, Grey and Viktor turn from pursuers to pursued. From the gleaming corridors of visionary laboratories to the cobblestone alleys of Eastern Europe to a lost oasis in the Sahara, Grey and Viktor must sift through science and myth to uncover the truth behind the Egyptian and his sinister biotech—before that truth kills them. PRAISE FOR THE DOMINIC GREY SERIES "Relentless" -Publisher's Weekly "Layton Green is a master of intellectual suspense." -JT Ellison, New York Times bestselling author "Stirring and imaginative . . . the reader [is] in for a wild ride." -Steve Berry, New York Times bestselling author "A story that will move you to the edge of your seat" -The Seattle Post-Intelligencer "An awesome read" -Blood Writes Mystery Blog, naming The Summoner as Mystery Pick of the Week and one of the top ten books of 2011 "I do believe Layton Green has moved into my top 5 author category" -A Novel Source "Layton Green is an absolutely brilliant writer" -Everything To Do With Books "[The Summoner] is one of the best books I've ever read" -Odyssey Reviews "Giving Green's The Summoner five stars and five stars alone downplays how I feel about this book" -1000+ Books to Read "The confines of a page are not enough for Layton Green's writing. His work begs to be translated into 100-foot high IMAX images, rendered in 3D, and given a score by Hanz Zimmer." -Biblioteca “Layton Green's Dominic Grey might be the first character that I would put in the book boyfriend category” – A Girl Who Reads "If you like a taste of the bizarre mixed in with a Bourne-like bad-ass special agent then you need to order the ENTIRE four-book Dominic Grey Series . . . these books will keep you up into the wee hours of the morning because they are practically impossible to put down. Grey has become one of our favorite protagonists." – Blurppy.com book and pop culture blog “A well-crafted and exciting thriller" - Booklist “Green’s The Summoner proved his great talent. The Diabolist ensures his place at the top of crime fiction: his number 1 place. Unbelievably good, unbelievably intricate, unbelievably Green.”— The Review Broads “[A] fantastic thriller that leaves the reader breathless and on the edge of their seat.”-- Surrounded by Books Layton Green twists and turns you in your seat, unraveling a tale so multi-dimensional even the most leery will be attracted.”-Luxury Reading “Fascinating . . . intriguing . . . stunning . . . one of the most thought-provoking novels you will ever read!”—Book Reader’s Heaven