Game of Thrones star Maisie Williams has said that the upcoming fourth season of the show will "trample" on the first three.

The 16-year-old actress, who plays Arya Stark on the HBO drama, told Wenn, "People should have no worries. The new season is going to trample on anything we have done before."

She added that her character will continue her quest for revenge after the events of season three, "At the end of season three, we have seen this other side to Arya, with brutality. We see the relationship between Arya and The Hound changing, they are not actively going out of their way to upset each other anymore.

"They're definitely not friends but they are trying to get along."

Game of Thrones returns to Sky Atlantic on April 7 at 2am, to coincide with the show's US premiere, and 9pm.