Benedict Cumberbatch Takes on Math + Murray-arty on 'Sesame Street' - VIDEO

Benedict Cumberbatch isn't a detective, he just plays one on TV, but that doesn't stop the cast of Sesame Street from asking him to help solve a case.

Because when Benedict Sherlock is around the game is afoot!

This time around Benedict must fight the dastardly Murray-arty to figure out if there are more apples or oranges on the table in this short video hilariously titled, "The Sign of Four (or is it Three?)."

Unfortunately, actors can't do math so Count Von Count steps in to help out Benedict Counterbatch take down his arch-nemesis.

Meanwhile, children everywhere are incredibly confused because what is a Benedict Cumberbatch? Is he on Yo Gabba Gabba?