TWO-and-a-half months can certainly fly when you're having fun.

It feels like Game of Thrones just returned for the start of its sixth season, but the HBO series is ready to farewell record audiences for another year.

"Winds of Winter" is the title of the most recent book, though the series has deviated enough to ensure even the book-lovers don't know what will happen next.

Without reading too much into the title, for six reasons the Starks have warned "Winter is Coming", and part of that threat is posed by the White Walkers.

Could the first snow fall in Westeros this week?

"Winter is Coming" is one of the series' most well-known motifs. Since the first episode in 2011, various characters, mainly the Starks, have warned winter would come.

From our trips beyond the Wall, we learned the White Walkers pose one of the biggest threats, and the two tie together quite obviously.

Given some of the past episode titles, Winds of Winter could be enough of a hint.

Episode five, the one where we learned all about then farewelled Hodor, was titled "The Door".

Episode eight, of which most of the hour followed Arya Stark's rebirth in Braavos, was titled "No One".

Last week's epic "Battle of the Bastards" featured the huge battle between the series' two biggest bastards: Jon Snow and Ramsay Bolton.

While we will stay glued for the whole 69 minutes anticipating an appearance by the White Walkers, there is so much more going on.

Jaime Lannister's appears to be a guest of Walder Frey (ask the Starks about how well that went last time), Lloras Tyrell and potentially Cersei Lannister stand trial, Tyrion and Daenerys Targaryen, who appeared to strike a deal with Yara Greyjoy last week, could be thrust into the Game of Thrones, and Sansa Stark and Jon Snow are confronting the real depth of their current situation.

Add to that Davos' confrontation with Melisandre over the awful death of Shireen Baratheon and the always-present threat of White Walkers and further battle, and Winds of Winter shapes to be an enormous episode.

Then there remains the riddle of the Tower of Joy, at which many viewers expect the mystery behind Jon Snow's parentage will be solved.

Most of those predict that revelation will form the final scene of the season, but there is no confirmation, other than a publicity photo of Bran (who was left out of the trailer) lying in snow, anything will happen.

Game of Thrones' sixth season finale will air on Showcase at 11am, then 7.30pm on Monday.