Mark Addy's new US TV show may be a fantasy adventure saga - but the actor says it's strictly for grown-ups.
The HBO series Game Of Thrones has power struggles, family friction, sibling rivalry and sex - plus hairy men on horseback, sword fights and the supernatural.
"It's a bit like Lord Of The Rings for grown-ups," says Full Monty star Mark, who plays King Robert Baratheon, embattled ruler of the Seven Kingdoms of Westeros. "This is definitely not one that you can watch with your kids."
Adapted from George RR Martin's novel series A Song Of Ice And Fire, the show charts the bloody struggle for control of Westeros, a rough-and-tumble land where the seasons last for decades. The books' many fans are already in a high state of online excitement about the series, but HBO also hopes to attract an audience not usually drawn to sword-and-sorcery stories.
The 10-part series, which can be seen on Sky Atlantic, sees King Robert and his long-time friend Lord Eddard "Ned" Stark (Sean Bean) fighting off challenges to the throne.
Mark plays Robert as a good man gone slightly to seed - Richard Lionheart crossed with Henry VIII.
"He's discovered too late that he's surrounded by enemies, and the only person he can trust is Ned," Mark said.
Fans of the books love them for their complexity, pace and a level of realism unusual in the genre - something the series has tried to retain.
"It's a fantasy world, but I think they've made it look and feel so realistic that you go, 'All right, I buy that this is them and this is where they are'," Mark said.