Lora_w
Moriarty is a boy who came out of the well and is terribly offended that he was not found!!!! to

the_mockturtle
The skull in the well is the skull of Moriarty in childhood.

Lora_w
But this version explains Moriarty’s psychopathic twist on Sherlock.
He grew up to get revenge!! Ahahahahahahahaha! and c)

the_mockturtle
“This version would even explain why Moriarty didn’t die when he shot himself! Because the skull is in the well! and :)