Please be aware that this post has spoilers. If you do not wish to know the stories, then do not click on "read more". The spoilers that this post contains are from Sherlock Holmes' season 1 & 2 routes in Guard Me, Sherlock.
It has me wondering about Jack Stillman. When in Clark's house, Sherlock confronts Jack Stillman. When he does, he mentions that Jack is a doctor, a sadist and psychopath, and that he has a deep hatred for women. Jack of course confirms the doctor profession, but doesn't deny the rest, but instead talks about the color of Sherlock's blood.
Then in season 2, they discuss "Jack the Ripper", which is suppose to have the same characteristics. Also, Jack had a "personal" grudge against the man Sherlock was after, and even killed him instead of letting him go to the cops.
This has me wondering... Is Jack Stillman "Jack the Ripper"? What does everyone else think?