A Scandal in Bohemia
Holmes displays a strong aptitude for acting and disguise. In several stories ("The Sign of Four", "The Adventure of Charles Augustus Milverton", "The Man with the Twisted Lip", "The Adventure of the Empty House" and "A Scandal in Bohemia"), to gather evidence undercover he uses disguises so convincing that Watson fails to recognise him. In others ("The Adventure of the Dying Detective" and "A Scandal in Bohemia"), Holmes feigns injury or illness to incriminate the guilty. In the latter story, Watson says, "The stage lost a fine actor ... when [Holmes] became a specialist in crime".