'Game of Thrones' Season 4 Finale Spoilers: Will Tywin Lannister Die?

"Game of Thrones" season four finale is just a week away and it is expected to be one of the longest GoT episodes to date with a run time of 66-minutes.

The last episode of the season is titled "The Children," and its official synopsis hints that Tyrion will learn the truth about his situation. Reportedly, Jaime Lannister will tell his brother the truth about Tysha, Tyrion's first wife and true love, while helping him flee the castle.

Jaime reveals that Tysha is not some common whore that he hired and that she really loved Tyrion for who he was. Jaime also unloads the fact that Tywin was not happy that the two got married, and this prompted him to have her gang-raped. Tywin, who paid her a silver each for every man she took, even forced his son to watch Tysha being raped by the guards.

This revelation forces Tyrion to make a detour while fleeing the castle and confront his father. But like every other meeting between the father-son duo, this confrontation too does not go well, especially forTywin.

Tyrion, who was wrongly accused of killing his nephew Joffrey, gets his revenge for all the pain that his father has inflicted by killing Tywin with a cross bow.

Meanwhile, the official episode synopsis also talks about an unexpected arrival north of the Wall, and this seems to hint at the arrival of Stannis Baratheon just in time to crush Mance Rayder's army. It is believed that Stannis will stay and negotiate a settlement with the Wildings and will in turn seeks Jon Snow to support his claim to the throne.

"It's by far the largest episode that they've ever made," director Alex Graves told The Huffington Post. "The tectonics and the story are the largest that have ever happened, and that's not counting the x-number of battle sequences, x-number of gigantic digital effects sequences, and x-number of how many characters are alive and standing and even on the continent when it's over. It's a big one."

The official synopsis of "The Children" states that "circumstances change after an unexpected arrival from north of the Wall; Dany must face harsh realities; Bran learns more about his destiny; Tyrion sees the truth about his situation."

"The Children" will air on Sunday, June 15 at 9 p.m. ET on HBO.