The Man Who Was Sherlock Holmes

Flynn impersonates Sherlock Holmes, using feigned deduction to steer investigations while posing as the famed detective. The disguise creates comic situations but also aids the case through quick-witted, opportunistic problem solving. He blends audacity with a knack for noticing small details that advance the investigation.

Heinz Rühmann plays Watson, who accompanies the Holmes impersonation. He contributes steadiness and pragmatism, balancing the chaos of disguise with practical insights. The partnership with Flynn provides comic yet effective support in pursuing the criminals.

Mary Berry is one of the seamstress sisters traveling to claim their inheritance. She and her sister Jane are central witnesses and potential love interests for the detectives. Mary ultimately becomes involved in the suspense and helps signal the police at the climax.

Jane Berry is Mary’s sister, accompanying her on the journey to claim the inheritance. She becomes entangled in the investigation and shares in the climactic resolution alongside her sister and the detectives.

Lapin is the gang leader, a calculating criminal who orchestrates the theft and pursuit of the valuables. He provides the central antagonistic force for the detectives to outsmart and outmaneuver.

Madame Ganymare is a criminal accomplice staying at the hotel, collaborating with Lapin to retrieve the money and plans. She adds intrigue and danger to the hotel-based misadventures.

Sir Arthur Conan Doyle appears in the courtroom and reveals that Holmes and Watson are fictional characters. He humorously grants Flynn and McPherson permission to use the names, effectively authorizing a new chapter for the two impostors.