Coldcase - The secret of lost golden room

Are you ready for the become a Sherlock Holmes? Cold Case is a detectives journey unraveling the mystery in the Winchester house in Letland, Belle époque era, fictional country. One day, a detective got a case seeking a girl named "Rura." The girl Rura was the only heiress of the Winchester count in the Chadwick region. She was disappeared 50 years ago with a Golden Room key. With your time-traveling ability, back to 50 years ago to figure out what was happened to the girl Rura and the Golden Room. Get a clue by the unknown objects, puzzles, and the people in the house that seem suspicious, in...