It never occured to me until just this second that the forced suicides in Study In Pink actually echo in Fall. Think about it: Moriarty had hired the cabby to force people to kill themselves with this little game (Russian roulette with pills, if you will.) He does the same damn thing to Sherlock at the end of the Fall, forces him to jump---even after killing himself.

Just wow. I know they say the episodes aren't linked...but Moriarty's insanity and dastardly deeds sure do! What worked once would certainly work a second time...