Matt Charman (Bridge of Spies) has been attached as lead writer to adapt Henry Hemming's upcoming nonfiction book, M: Maxwell Knight, MI5's Greatest Spymaster, about "one of the inspirations for the spy chief in Ian Fleming's James Bond novels," Deadline reported.
Producer Mammoth Screen (Poldark, Victoria) acquired rights to the book, which will be published by Preface in the U.K. on May 4 and by PublicAffairs in the U.S. on May 9 (under the title Agent M: The Lives and Spies of MI5's Maxwell Knight). The company is "eyeing a multi-part drama series," Deadline wrote.