The Mysterious Affair at Styles isn’t just Agatha Christie’s first Poirot novel, it’s currently the only Poirot novel in the public domain. It was written on a bet that Christie couldn’t write a detective novel in which the reader couldn’t deduce the criminal. Her attempt laid the foundation for one of literature’s most famous detectives.

In this novel we’re introduced to Poirot as he’s settling in to a new life