• Maisie Williams attends the House Of Fraser British Academy Television Awards on May 8, 2016 in London, England.

Maisie Williams attends the House Of Fraser British Academy Television Awards on May 8, 2016 in London, England. (Photo : Getty Images/Stuart C. Wilson)

"Game of Thrones" lead star Maisie Williams warned fans of what may come in Season 7 through Twitter Tuesday morning. The Arya Stark actress dropped hints of what the upcoming chapter would be like which she described in her tweet saying, "Nothing will prepare you for this."

The post was after Williams was able to read the entire script of the TV series' next season. Comments for the upcoming season was not only made by the young actress but also by another actor portraying a notable character in the HBO hit, IGN reported.

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Although he revealed he has not read any of the upcoming season's script, Kit Harrington was guessing a very dark and bleak theme awaits season 7. The 28-year old actor added if there is any event which will depict success in the next season, it would likely be celebrated at the conclusion. But protagonists have to experience a series of unfortunate events first before it happens, the report added.

He further said viewers will definitely see more of the White Walkers with the Army of Dead finally coming to force, which he described as something "exciting to see." Harrington also thought season 7 would be showcasing how people are going to deal with "winter is finally here," which is potentially a bad time for all of them, says the Irish actor.

Meanwhile, there had been reports about a return of a previous character. Jason Momoa who portrayed as Khal Drogo in the first season posted several photos of him in Ireland together with GoT showrunners David Benioff and D.B. Weiss, US Weekly reported. While the report suggested it may simply be a reunion, and the odds off Khal Drogo returning to the TV series is slim, no one can really say there is no possibility.

In case it happens, Momoa's return to the Emmy-winning series may be one of the twists for what Williams has hinted in her tweet. Still, readers are advised to take everything with a pinch of salt as major details are not yet confirmed.

For other rumors surrounding the season 7 of "Game of Thrones," watch the video below.