One, Two, Buckle My Shoe

Shortly after Hercule Poirot’s visit, a dentist is found murdered in his Harley Street practice, with seemingly suicide evidence nearby. Another patient is later discovered dead from a lethal dose of local anesthetic, raising questions about the nature of the crimes. The mystery centers around a shoe buckle, which holds the key to solving the case. Poirot must decipher the clues to uncover the truth behind the unusual deaths.