The BBC’s Sherlock has plenty of Doctor Who in its blood between creators Steven Moffat and Mark Gatiss, but did you know Matt Smith even auditioned for the role of Watson? Or that Amanda Abbington (Mary) is Martin Freeman’s real-life partner? Flip your collar and swish that coat, as the 34th episode of ‘You Think You Know TV?’ hits the streets of London to detect some elementary facts from Sherlock.

Both Moffat and Gatiss came up with the idea for Sherlock on a train to the Doctor Who set, though a few concessions needed to be made to bring the world’s foremost detective to the modern day. Filming too can get a bit tricky, as Benedict Cumberbatch and Martin Freeman had to work around their mutual commitments to The Hobbit for Season 2.

‘You Think You Know TV?’ is a ScreenCrush original series that dives deep into the worlds of your favorite TV series and freeze frames a few tidbits you might not have known, as with our other installments for Friends, Futurama, Louie, Charlie Brown, Tales From the Crypt, Buffy the Vampire Slayer, The Twilight Zone, American Horror Story, The Sopranos, Vikings, Twin Peaks, The Fresh Prince of Bel-Air, LOST, Seinfeld, Batman: The Animated Series, House of Cards, Power Rangers, Family Guy, Agents of S.H.I.E.L.D., Breaking Bad (x2!), True Detective, Empire, The Simpsons, Hannibal, Star Wars Rebels, Better Call Saul, The X-Files, The Flash, Arrow, Mad Men, The Walking Dead and Game of Thrones.

Our companion series ‘You Think You Know Movies?’ has already tackled everything from Home Alone to Rocky, but now we’re faking our deaths and heading into our mind palaces to deduce every last clue on our modern Sherlock.

Watch more TV installments of ‘You Think You Know’ down below, in addition to our Sherlock entry above, and let us know what shows we should cover next!

Check Out 100 TV Facts You May Not Know!

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