15 crucial details you probably missed in last night's episode of 'Game of Thrones'

Warning: this article contains 'Game of Thrones' episode 3 spoilers:

The eighth and final season of Game of Thrones has been an explosive one, with fans waiting in eager anticipation for each new episode.

The latest episode to air, The Long Night, proved to be an eventful one and was, in fact, the longest ever GoT episode, spanning a phenomenal 82 minutes.

Take a look at the preview to Season 8, Episode 4:

We're now just three away from the finale episode, and things are really heating up. And the massively hyped Battle of Winterfell met and surpassed the expectations of many of the show's eager fans. A real highlight being the moment Arya Stark killed the Night King, AKA the leader of the White Walkers.

But, considering the episode went on for nearly an hour and a half, there are likely a number of details you may have overlooked.

Here are just some of them:

1. Alys Karstark was with Bran and Theon Greyjoy, and so it's safe to say, she's probably dead now

Lady Als Karstark was most likely also killed in the battle as Theon was left standing alone in front of Bran when the Night King made an appearance.

Alys didn't actually have any lines this season but was seen in the first two episodes.

2. The spell that Melisandre used to set the Dothraki's arakhs alight is very similar to the spell Beric Dondarrion used earlier 3. Melisandre speaks more Valyrian than you realised

Melisandre said "valar morghulis," as she passed Grey Worm, meaning, "all men must die."

By the way, if you haven't yet seen Sophie Turner reacting to the trailer for episode 3, you need to:

4. The last few words Edd Tollett utters to Sam Tarly paralleled their encounter with the Army of the Dead back in season three

Moments before he was killed by a wight, Edd told Sam to get up from the ground, which is a real throwback to that moment in season three in which Sam and Edd were fleeing a White Walker attack when Sam collapsed to his knees.

5. The image of Wights throwing themselves off the castle walls harks back to 'Hardhome' in season five

One of the most memorable moments in 'Hardhome' was when the Night King had thousands of wights throw themselves off a cliff.

6. Arya repeated Jon Snow's fighting advice to Sansa 

Arya told Sansa to "stick 'em with the pointy end" of the dragonglass dagger which is exactly what Jon Snow advised Arya to do in season one, episode two.

7. Arya's first run-in with the wight army saw her using a move she had used in season six with the Waif 8. The young girl who made a promise to protect Gilly and the others was seen inside the crypt - she didn't do any fighting

9. Qhono, lieutenant in the Targaryen army, was one of the corpses resurrected by the Night King 10. Theon's last few moments in the godswood made for a powerful connection to a pivotal chapter in the books series

In some of the last chapters to be published, Theon speaks to the weirwood tree in the godswood, saying, "Please. A sword, that's all I ask. Let me die as Theon, not as Reek."

11. Theon's death acts as a throwback to the powerful speech he gave at Winterfell

Theon saw that he was outnumbered but heroically charged at the Night King anyway, before being stabbed by the latter.

12. Arya's impressive flip of her dagger resembled the one she pulled on Brienne in the previous season 13. Arya stabbed the Night King in the same spot where Children of the Forest shoved into dragonglass' chest

14. Davos was about to draw a dagger to kill Melisandre before she chose to die willingly 15. The title of the episode, The Long Night, harks backs to a scene in season one

As Old Nan told Bran his favourite "scary story", she talked of the "the Long Night" and how the White Walkers came to wreak havoc on Westeros.