This week, Emma B chats to Sunday Times Bestseller and Code-breaker aficionado Sinclair McKay about his brand new book, The Scotland Yard Puzzle Book: Crime Scenes, Conundrums and Whodunnits to Test Your Inner Detective. The pair chat about Sinclair's favourite detectives, the power of crime on classic authors like Charles Dickens and Arthur Conan Doyle, and how to use your mind to crack the most difficult of codes!