Sherlock Holmes is the world's most famous fictional detective and features in more than 60 original stories, as well as countless adaptions. For over a century, he has intrigued and excited his fans with his intellect and powers of deduction, and he made his creator – the author Arthur Conan Doyle - rich and famous. But the writer came to hate his fictional character.

Over the course of three episodes, historian and lifelong Sherlock Holmes fan Lucy Worsley investigates the extraordinary love-hate relationship between Holmes and Doyle, detective and author, in a unique parallel biography of Sherlock Holmes and the complex man who created him.