Elementary, like Sherlock, is an updated story.
They Might be Giants has a crazy George C Scott who thinks that he is a historical literary figure, escape a sanatorium with his psychiatrist Doctor Mildred Watson hot on his heels cataloguing his mania.
Off to the side of all this in the lore of Doctor Who... There's a Bernice Summerfield Audio Adventure where she's lost in time for a while and teams up with Mycroft Holmes to save the day against an Alien menace.
The drug that lets you see the massive glowing hound!
It creates a suggestive state where you see what you're told to see, like Sherlock jumping off a building.
Did Sherlock drug John again to fake his suicidal jump?