London, 1893. A stormy evening. The fire crackles in the hearth of 221B Baker Street, but Sherlock Holmes is missing. All that remains is a sealed letter addressed to you — and the promise of a deadly conspiracy that threatens the very fabric of the Empire.

Your team has been summoned by the great detective’s confidante to step into his study, filled with hidden compartments, cryptic clues, and mechanical puzzles beyond imagination. Every object has meaning. Every second counts.

Do you have the wit, logic, and deductive skill to solve the case Holmes couldn’t? Or will the mystery consume you like it did him?