Teaser of 'Sherlock' season 4 released
The teaser for season 4 of the BBC television series 'Sherlock' was released on Sunday. Actor Benedict Cumberbatch reprises his role as the detective 'Sherlock Holmes' while Martin Freeman returns as 'Doctor John Watson'. The teaser also features the new villain played by Toby Jones. The new season will air in 2017, three years after the premiere of season three.