He is the most portrayed film character of all time, with more than 70 actors having played the part in over 200 movies. In this documentary, actor and director David Hayman (Trial & Retribution, Hope and Glory) becomes a sleuth himself to conduct a fascinating personal investigation into the enduring appeal and real-life inspiration behind Sir Arthur Conan Doyle’s Sherlock Holmes. Visiting many of the places that influenced Conan Doyle’s work, David also meets writers, historians and celebrity fans of the Great Detective, who include actor Stephen Fry (Kingdom) and author Lynda La Plante (Prime Suspect).