Leo Marks, Between Silk and Cyanide, The Folio Society Edition note Folio Society edition, still sealed in the original publisher’s shrink-wrap, unopened. Introduction A pristine Folio Society copy of Leo Marks’s memoir of code-making and code-breaking in the Second World War, written by the man who headed cryptography for the Special Operations Executive. This sealed volume offers an insider’s account of clandestine warfare, where every poem, scrap of silk and misread signal could mean survival or disaster for agents in occupied Europe. Content Between Silk and Cyanide recounts Marks’s struggle to replace insecure silk codes with safer systems, his often fraught dealings with senior commanders and the fate of the agents whose lives depended on his work. The book interweaves technical ingenuity, dark humour and deep personal guilt as it follows the progress of the war from London offices to the front lines of secret intelligence. Condition As new. Slipcase and book are in the original, unbroken shrink-wrap. Shipping The volume will be carefully packed and dispatched with tracking.