The Forbidden City 1901

You open your eyes. Panicked voices sound distant in your ears. What is going on here? You don't know much about your mission yet - only that it takes place in 1901 on the grounds of Brown, Boveri & Cie. And you just arrived there. Still a bit dizzy, you stand up with your colleagues and stand in front of a white door with the name C. Brown on the mailbox. It's bustling on the BBC - Area, which due to the access restriction carries the name "The Forbidden City". Today more than ever, because an alarming news has thrown Brown's circle of trust into panic. Brown has disappeared, his office is destroyed! Everything is thrown around, drawers rifled, sheets fluttering around. Only one meaningless, incomprehensible letter was found by the secretary on Brown's desk. Walter Boveri has personally asked you to come in the hope that you can solve the mystery of his colleague - before the press learns of his disappearance. The circumstances are extremely mysterious - but you already feel this tingling in your fingers, which always shows up before an adventure, and you can hardly wait to solve the riddle in the forbidden city!