Hero Fiennes Tiffin And The "Young Sherlock" Cast Hilariously Try American Fast Food For The First Time

So, to celebrate the new series, we had Hero Fiennes Tiffin, Zine Tseng, and Dónal Finn, who star as Sherlock, Princess Shou'an, and Moriarty, swing by for Buzz Bites, aka the show where they try American fast food for the first time.