Actor Ian Mcshane is set to join the cast of Game Of Thrones in a mysterious new role.
Network executives at America's HBO channel have refused to name the character the Deadwood star will play, only to reveal the supporting part will have "a relatively small amount of screen time", but will be of "key importance" to the plot, according to EW.com.
The sixth season of the hit fantasy drama is set to premiere in 2016.