James was relaxing in his hotel room in Lyon when he heard a knock at his door.

Rİddle: James was relaxing in his hotel room in Lyon when he heard a knock at his door. James opened the door and see a beautiful woman whom he had never seen in his life. She said that she is so sorry and she thought that this was her room. She was about to leave the room when the James takes out his pistol and ask the girl to stop.

What made James suspicious of the girl?

Answer: She knocked on the door.. no one knocks on the door of a room they think is theirs