It should be clear by now that while, of course, Doyle is our absolute god, we have gone quite a long way away as well – we’ve introduced Sherlock and Mycroft’s parents [for instance], I don’t think they’ve ever been seen in any adaptation – so there are lots of surprises to come.
Mark Gatiss on Sherlock series 4 (x)
Confirmed.
(via waiting-for-garridebs)
or as willietheplaidjacket put it: