What could be the strongest and most clarifying evidence of Jon Snow's return to "Game of Thrones" season 6? Actor Kit Harington, the essayer of the beloved character, was spotted in Belfast, where the rest of the series' cast flew to film the new season.

Watchers on the Wall shared a couple of photos of the star arriving there. The site added that Tom Wlaschiha, who plays the role of Jaqen H'ghar, was on the same flight. The pictures were submitted to the site by a fan, who was on board the same flight to Belfast.

Also, there were a couple of other photos shared by another fan in Winter is Coming (sadly, they were blurry and the person in the picture was almost unrecognizable). The fan said that she spotted the actor in Belfast. Harington still wears Jon's signature locks that he styled into a man bun when he traveled.

Could this be the ultimate proof that Jon Snow will turn out to be alive in "Game of Thrones" season 6? Maybe, but this doesn't promise that he will live through the fatal stabbing that left him "deader than dead."

As Comicbook points out, Charles Dance, who played Tywin Lannister in the series, also went to Belfast last year not to continue playing the role but to simply film his character's funeral. This might just be the case for Harington's arrival in the location too.

However, Collider reports that Harington has been traveling to Belfast multiple times during the season's pre-production. Also, he refuses to take photos with fans in the place presumably to shy away from giving away Jon's fate in "Game of Thrones" season 6.

These pictures are just some of the copious amount of proofs and speculations that the dearly loved Lord Commander of the Night's Watch either escaped death by a hair's breadth or is going to be resurrected.

Just recently, the Castillo de Zafra in Spain was announced as a filming location. Its resemblance to the Tower of Joy made fans believe that it will be used to lay out Jon's pedigree. As previously reported by Books N Review, the possible inclusion of the tower in "Game of Thrones" season 6 will likely settle the mystery of his parentage.

Then there's the persistent rumor of Melisandre bringing him back to life and the even more persistent speculation that Harington still has the Jon Snow do, not because he likes it (as what he said to Collider before) but because he needs to keep it for filming purposes.