Yes, suspicion that the lady was not who Horace Danby believed her to be arises before the story ends. The key moment when this doubt begins is when the lady remains unusually calm upon catching Horace in the act of burglary, which is strange behavior for a supposed homeowner
. Further suspicion grows when the lady does not call the police but instead asks Horace to break open the safe to take out all the jewels, which is an odd request for a real owner who would presumably know the safe's combination
. Additionally, her failure to provide any proof of identity and her confident, manipulative demeanor contribute to the realization that she is deceiving Horace
. The gradual unveiling of these suspicious behaviors-her calmness, unusual demands, and manipulative control-leads to the understanding that she is actually a clever thief who outwitted Horace, making the story intriguing and suspenseful
. In summary, the suspicion begins when the lady's calmness and unusual request to break the safe become evident, and it solidifies as her manipulative behavior unfolds, revealing her true identity before the story concludes
