VIDEO : 'Sherlock' Will End When Benedict Cumberbatch Leaves, Co-creator Reveals

Sherlock co-creator and writer Steven Moffat has revealed that the BBC detective series will cease production when Benedict Cumberbatch leaves the show.
In an interview with Variety, Moffat compared Sherlock to Doctor Who, saying that "most shows have a built-in mortality." While Sherlock will see its end following the departure of the lead actor, Doctor Who "will carry on forever, because you can replace every part of it," Moffat said.

While the news isn't surprising, it still proves devastating.