The hotly anticipated British mystery drama returns with the revelation of just how Sherlock Holmes faked his death two years ago.  Warning: Minor spoilers ahead!   At BuzzFeed, you can read my latest feature, " Sherlock  Is Back From The Dead And Better Than Ever,"  in which I review the spectacular third season opener of Sherlock  ("The Empty Hearse"), which airs Jan. 1 in the U.K. and on Jan. 19 on PBS' Masterpiece .   Just how did Sherlock Holmes (Benedict Cumberbatch) fake his own death?   When Sherlock  picks up — two years after the action of the 2012 Season 2 finale, “The Reichenbach Fall” — the facts surrounding how the master sleuth pulled off the seemingly impossible are kept firmly under wraps for much of the ingenious 90-minute season opener, “The Empty Hearse” (which airs Jan. 1 on BBC One in the U.K. and on Jan. 19 on PBS’s Masterpiece).   This is not to say that viewers are denied a revelatory sequence in which the truth about just how Sherlock f...