Sherlock Holmes and the Baker Street Irregulars Books in Order

Sherlock Holmes and his young Baker Street assistants investigate the suspicious deaths of a circus tightrope troupe. For the Irregulars, navigating Victorian London's streets means following dangerous clues while helping the detective untangle the mystery.

Elsa Hoffman asks Sherlock Holmes to investigate her aunt's mysterious death. As the Baker Street Irregulars encounter apparent ghosts and suspicious pursuers, they must determine whether supernatural forces or calculating criminals are behind the danger.

A murder investigation turns urgent when Dr. Watson disappears. Sherlock Holmes and the Baker Street Irregulars pursue clues involving abduction and lost treasure, but suspected betrayal within their own group makes every new lead uncertain.

Sherlock Holmes plans a trap for Professor Moriarty with help from the Baker Street Irregulars. As the criminal mastermind counters their efforts, the young detectives follow Holmes into a dangerous chase across continental Europe.