Mhysa

Tyrion learns of Robb and Catelyn's murders and warns a dismissive Tywin that the Northerners will never forget the Lannisters' role. Tywin asserts his authority over Joffrey when he talks of further tormenting Sansa and orders Tyrion again to consummate his marriage with Sansa for the good of the Lannisters. When Tyrion accuses Tywin of never having made sacrifices for the family, Tywin says that he made a sacrifice not killing Tyrion at birth. Tyrion leaves to present the news to Sansa, but finds her already grieving.

Varys offers Shae a sack of diamonds to sail away from King's Landing, but she refuses. Jaime arrives in King's Landing with Brienne, and sees Cersei again.

The Stark soldiers are massacred and Robb's decapitated corpse, stuck through with pike holding the head of Grey Wind, his direwolf, is mounted on a horse and paraded through the camp. Lord Frey and Roose Bolton, now Warden of the North, discuss recent events and Roose reveals that the Blackfish escaped.

Arya and the Hound pass a group of Frey soldiers who are talking about the desecration of her brother's body. She offers one of them the coin given to her by Jaqen H'gar and then stabs him. The Hound intervenes and slays the rest.

Bran and his group meet Gilly and Sam who realizes that Bran is Jon's brother. At Bran's behest, Sam takes them through the passage to get north of the Wall and gives them the dragonglass weapons he found. Sam and Gilly travel on to Castle Black and meet Aemon, who allows Gilly to stay and sends ravens with messages warning of the return of White Walkers to the Seven Kingdoms.

Ygritte comes upon Jon watering his horse. He confesses his love for her but says she knew he was an infiltrator all along. She shoots him thrice but doesn't kill him as he escapes on his horse. He arrives at Castle Black and is taken to be cared for by Sam and his friends.

At the Dreadfort, a severely mutilated Theon begs for death. His torturer, who we learn is Roose Bolton's bastard son Ramsay Snow, states that Theon is more important alive and renames him "Reek".

Balon receives a letter from Ramsay demanding the Ironborn's withdrawal from the North, along with a box containing Theon's severed penis. Balon refuses to negotiate, despite Theon's life hanging in the balance. Yara goes with the fifty best Ironborn men on a ship to rescue Theon.

Stannis informs Davos of Robb's death and Melisandre's plans to sacrifice Gendry. Davos helps Gendry escape. Learning of this betrayal, Stannis orders Davos' execution, but Davos protests, presenting Aemon's letter. Melisandre tells Stannis that only he can save the North from the White Walkers and that he will need Davos' help. Stannis spares Davos.

The freed slave population of Yunkai hail Daenerys as Mhysa, a term which Missandei explains as Old Ghiscari for "mother". Daenerys lets her dragons fly freely as she greets them and is surrounded by and embraced by the former slaves as her companions look on in awe.

"Mhysa" was written by executive producers David Benioff and D. B. Weiss, based on George R. R. Martin's original work from his novel A Storm of Swords. Chapters adapted from A Storm of Swords to the episode were chapters 43, 49, 53 to 55, 57, 63, and 64 (Daenerys IV, Jon VI, Arya XI, Tyrion VI, Davos V, Bran IV, Jaime VII, Davos VI).[8]

After being absent for the entire second season, Peter Vaughan returns as Maester Aemon and Josef Altin returns as Pypar. This episode also marks the return, after a long absence, of Patrick Malahide as Balon Greyjoy and Gemma Whelan as Yara Greyjoy.

In its original American broadcast in HBO, "Mhysa" was seen by an estimated 5.4 million household viewers, according to Nielsen Media Research.[9] It marked a year-to-year increase in viewership of 28 percent compared to the second season finale, "Valar Morghulis", which was seen by 4.2 million.[9] The second broadcast of the "Mhysa" during the night was viewed by 900,000 viewers, bringing its total viewership for to 6.30 million.[10] According to analysts, the success of the episode significantly helped Game of Thrones to surpass True Blood as the second most-watched series on HBO, after The Sopranos.[9][10] In the United Kingdom, the episode was viewed by 1.154 million viewers, making it the highest-rated broadcast that week. It also received 0.110 million timeshift viewers.[11]

"Mhysa" received generally positive reviews from television critics, with some of them addressing the finale's anti-climactic closure of the third season and for establishing new storylines for the fourth. Review aggregator Rotten Tomatoes surveyed 20 reviews of the episode and deemed 100% of them to be positive with an average score of 8.5 out of 10. The website's critical consensus reads, "'Mhysa' wraps up several of season 3's lingering storylines while subtly setting the table for season 4."[12] James Poniewozik of Time wrote in his review, "The end of season 3, then, spent some time among the winners and losers in post-Red-Wedding Westeros, giving the audience a chance to soak in the shock, seethe at the winners' glee, and get a reminder of the larger forces – White Walkers, dragons – well beyond the war between the Lannisters and the Starks. If the Red Wedding seemed to kill hope, 'Mhysa' made clear that it didn't end anything. And it weaved together the many, many threads of GoT's tapestry by returning to a recurring theme: that Game of Thrones is ultimately about family."[13] Matt Fowler of IGN described that the finale had "nicely set up a lot of cool stuff for Season 4, but it was also lacking some of the power and majesty of previous finales. Especially the ending with Dany, who herself had a better ending back in 'And Now His Watch is Ended' when her dragons torched Astapor and she left with a full army." He also praised the scene where Arya killed a Frey soldier.[14] Writing for Today, Drusilla Moorhouse remarked that "After last week's shocking massacre, most fans braced for more tragic deaths in season three's finale. Instead, the blow was softened with poignant reunions and surprising saves, setting the stage for an explosive fourth season."[15]

In her review for Zap2it, Terri Schwartz wrote that "Nothing can ever quite redeem the deaths of Robb and Catelyn Stark, but at least larger forces are taking shape that are propelling this series into Season 4. Daenerys is as powerful as she's ever been, Jon Snow returns to the Wall while Bran heads north of it and the Greyjoys ready an assault to finally save Theon from his captor. Then there's the fact that Stannis decides to sail north to the Wall to aid the Night's Watch in their fight against the White Walkers, which seems like it's going to end up being the greater, global conflict in the future of 'Game of Thrones'."[16] Writing for The A.V. Club, David Sims gave "Mhysa" an "A-" rating, while Emily VanDerWerff gave it a "B+".[3] Sims, writing for audiences who have not read the novels, described the episode as lacking "a lot of serious plot movement or major twists and may have fans gnashing their teeth a little bit as they wait nine months for season four. The previous season finales have also had that quality, but they each ended on a barnstorming note. 'Mhysa', not quite so much."[3] VanDerWerff, writing for audiences who have read the novels, wrote that "On a plot level, not a lot happens in 'Mhysa'", but praised the episode in addressing the series' "value of one human life is in the face of a kingdom."[3] He also mildly criticized the series' template of when "something terrible happens in Westeros, Dany offers a glimmer of hope over in her story line", referring to it as its "Achilles' heel".[3] Kevin Fitzpatrick of ScreenCrush wrote in his review, "All in all, the air (or blood) of the season had mostly been let out by 'The Rains of Castamere', as even a returning Jaime’s most interesting moments arrived much earlier in the season, but 'Mhysa' gave us a good course-heading for season 4, with some much-needed catharsis along the way."[17]

The episode's final scene, in which Daenerys, "the blondest possible savior figure",[18] appears with "uncharacterized brown people" as "[being lifted] up as their messiah and praising her for saving them from bondage",[19] was criticized by at least four commentators[19] as having colonialist or even racist undertones.[4] They asked why the series chose to portray the Yunkish as nearly uniformly dark-skinned, rather than as ethnically diverse as in the source novels,[4][18] to which George R. R. Martin replied that this was because the scene was shot in Morocco with local extras.[20] Commentators also criticized, more broadly, that the series's inclusion of people of color was limited to only a small number of characters.[19][21]