Sinclair McKay is the Sunday Times bestselling author of Meeting Churchill, Berlin, Dresden, The Secret Life of Bletchley Park, The Secret Listeners, Bletchley Park Brainteasers and The Mile End Murder. He is a literary critic for The Mail on Sunday and The Spectator and lives in London.

Iain MacGregor is a British historian, author, editor, and public speaker, renowned for his in-depth explorations of 20th-century military history. With almost three decades in nonfiction publishing, he has collaborated with prominent historians such as Simon Schama, Max Hastings, and Michael Wood.

His acclaimed books include Checkpoint Charlie, an oral history of Cold War Berlin, and The Lighthouse of Stalingrad, which delves into the pivotal World War II battle . MacGregor’s writing has been featured in The Guardian, The Spectator, BBC History Magazine, and The Washington Post.