I used to live in Angers in France, one day my French friends took me to a massive castle nearby, to my astonishment i found Richard the lion heart wife and family all burried at the castle. to be a detective here is very simple.
Robin hood did not steal from the rich to give to the poor, he did not pay a ransom to free the king, he collected and stole from the poor English people to pay for the thieving king lionhearts huge castle in France.
Possibly the biggest story you will ever investigate.
History will be kind to me FOR I SHALL WRITE IT, springs to mind.