In the three most recent adaptations of Sherlock Holmes (Sherlock, Elementary, and the Game of Shadows) at crucial moments Holmes is deceived by Moriarty into making a tactical error and in the mean time a song about demon forces is played.

There Are Spoilers Below

In the movie, Holmes is fooled into thinking Moriarty intended to bomb an Opera house during Don Giovanni. Upon Holmes’ arrival, the chorus of demons is played as the main character is received into Hell. 

In the American procedural, Holmes is fooled into thinking a serial killer is Moriarty (when indeed the real Moriarty’s identity remains opaque to him) and Gil Scott-Heron’s, Me and the Devil, plays:

And in BBC’s version, Sherlock rides to the court house to function as an expert witness, and Nina Simone’s Sinnerman plays in the background:

Now, is this all just a coincidence or does something in the source material lend to this interpretation? No, it is not a coincidence. Yes, there is one reference to Moriarty as an evil on a diabolical level:

“[He] has, to all appearance, a most brilliant career before him. But the man had hereditary tendencies of a most diabolical kind. A criminal strain ran in his blood, which, instead of being modified, was increased and rendered infinitely more dangerous by his extraordinary mental powers. Dark rumours gathered round him in the university town, and eventually he was compelled to resign his chair and to come down to London…” – Sherlock Holmes on Moriarty in The Final Problem

I doubt that anybody I know was interested enough in that confluence of media and Sherlock Holmes source material. I had wondered to myself, “why had they utilized that sort of theme in these modern versions of Holmes, particularly when he’s portrayed as an atheist in two of them?” Since I hadn’t read the Final Problem in a while, the answer was unknown to me. When I went back to it, there it was.

I think part of the appeal of Holmes today is that his intelligence is used in fighting evil, I hope people go back to the books and read them though. Holmes is portrayed more humanely, more philosophically, and though I love the modern adaptations, more excellently in the originals.