I would start with https://www.google.com/amp/s/www.history.com/.amp/topics/british-history/robin-hood that’s always a good place to start.
Another great place to go look up information on him will be https://www.google.com/amp/s/www.historyextra.com/period/medieval/robin-hood-real-myths-facts/amp/
Go to sleep folks u need to rest
I was gonna answer it but the other person beat me to it.The answer is correct.
Answer:
The Secret of the Blue Room
Explanation:
Maybe it could be a murder story and it happened a long time ago in this "blue room". Throughout time after that people who have stayed in that room (it can be a hotel) have gone missing. Then, the main character finds themselves trying to solve the mystery and yeaaaaaa.