The Adventure of the Peculiar Protocols

This audiobook, read by Downton Abbey actor David Robb and featuring a bonus conversation with the author, uncovers a previously unknown Sherlock Holmes case based on a recently discovered Watson journal. Set in January 1905, Holmes and Watson are drawn into a secret investigation involving a mysterious manuscript, international travel aboard the Orient Express, and a conspiracy with global implications. Based on real events, the story offers rich period detail and clever storytelling as Holmes faces a challenge that tests his skills like never before.