The famous gem "Tears of the Blue Devil" was stolen from a New York museum.
The arrogant and domineering thief invited four genius reasoning experts to the scene of the theft.
Why did he do this?
However, no one thought that the thieves' arrogant behavior did not stop there.
He left a dangerous message in the museum:
If no one can find him within a month, everyone involved in this case will be "punished"!
The thief confessed: "I am among you who are investigating the case!"
Starting now, you are a detective and must find the real murderer within a month.
