Benedict Cumberbatch (Sherlock Holmes) and Martin Freeman (John Watson) are far bigger stars than they were at the show’s start, and coordinating their schedules to get them on a set for a prolonged amount of time will be a challenge.
Of course, those who have been following Sherlock Season 5 updates know it’s more complicated than getting Mark Gatiss and Steven Moffat on board.
With all these key players tied up in other projects, Season 5 feels a long way off.