"Game of Thrones": Oath-keepers, justice and Joffrey's killers revealed

[Warning: Stop reading here if you don't want to see spoilers from this week's "Game of Thrones."]

Lots of things were revealed on Sunday's episode of "Game of Thrones" -- including the identities of those responsible for Joffrey's murder.

But one other big question also lingered from last week -- how would the show treat Jaime following that much-talked-about rape scene?

Let's go through those and everything else that happened in "Oathkeeper," below:

Some may have figured this out already (or have known from reading the books), but Joffrey's murder was orchestrated by Littlefinger, with the help of Lady Olenna Tyrell (Margaery's grandmother). And Sansa unwittingly had a hand in it -- the poison was hidden in one of the stones in the necklace Littlefinger had made and Dontos asked her to wear to the wedding. There, Lady Olenna "adjusted" it and removed the gem, apparently slipping it into Joffrey's drink without anyone seeing.

Sansa was surprised to hear Littlefinger had a hand in the plot, since he was one of the few people Joffrey treated well. A man with no motive is a man no one suspects," he tells her. "If they don't know who you are or what you want, they cant know what you plan to do next."

He also explains that he plans to take her to her Aunt Lysa, which happens to be where the Hound is heading with Arya. Could a Stark family reunion be in the cards?

Meanwhile, in King's Landing, Lady Olenna comes clean about the Joffrey plot to Margaery during one of their walks around the garden. "You don't think I'd let you marry that beast, do you?" she asks, incredulously.

Margaery -- who seems equally taken aback and impressed by her grandmother's schemes -- then does a bit of scheming of her own. After hearing her Olenna's story about seducing the man that was going to marry her sister, she makes a late-night visit to the bedroom of the next little Lannister -- Joffrey's younger brother and the now-future king, Tommen (who is older than he was in the books, but still way too young for what's happening here) -- for a chat that's both completely innocent and totally not. She tells him they're to be married someday and that these secret visits will be so they can get to know one another before then. After an interruption by a cat with the best name in the Seven Kingdoms ("Ser Pounce"), she leans in for what looks to be a kiss on the lips but goes for his forehead at the last minute. Something tells us Cersei would not be at all happy about this.

Speaking of Cersei, she's still mourning Joffrey and out for revenge -- from both Tyrion and Sansa. Jaime (who visited Tyrion in prison and believes he didn't kill Joffrey) comes to their brother's defense, but she's having none of it. She dismisses him, coldly, which shouldn't be a surprise considering how he assaulted her by their dead son's body.

Jaime then gives Brienne his Valyrian steel sword and a custom-made set of black armor, and gives her a mission to find Sansa and bring her safely to her Aunt Lysa. This is a major choice for him -- Brienne over Cersei and their father -- and Brienne is clearly touched. He also gives her Podrick, the loyal squire who needs out of the capital after refusing to testify against Tyrion. Before they set off, Brienne gives her sword a name -- Oathkeeper -- both in name of her mission and Jaime's keeping of his vows.

Which brings us back to last week -- Jaime is being played as the good guy here, but that makes his actions, which played out so differently in the books (still incest, yes, but not rape), even more out of place.

This week's episode also returned us to Meereen, where the show opened with Grey Worm getting a reading lesson from Missandei and sharing their respective backstories. She's optimistic about returning home someday, but his future plans are simpler: "Kill the masters." He and other members of Dany's forces sneak into the city incognito and convince the slaves to begin an uprising. We see one scene of them attacking a master, and then it cuts to the city apparently being overtaken -- and Dany celebrating her victory by nailing the masters to the signposts just like they did to the slave children. Ser Barristan reminds her that the battle is over and the city is hers, and advises she act with mercy. "I will answer injustice with justice," she replies, unmoved.

At Castle Black, Jon Snow is sent on a mission to Craster's Keep to bring justice to the band of mutinous Night's Watchmen who killed Jeor Mormont last season, and the volunteers who agree to go with him include a new recruit, Locke (the man who chopped off Jaime's hand, for those keeping score, and was sent North by Roose Bolton to find and kill Bran Stark).

If you needed any reminder the mutineers are terrible, they're holed up at Craster's drinking from a skull and raping Craster's daughters. Nearby, Bran, Hodor and the Reed siblings are also captured by the outlaws. Their leader, Karl Tanner, interrogates them until Jojen Reed begins having a seizure and Bran admits he's a Stark.

And the episode ends with a baby -- presented to Karl as the last of Craster's sons -- left out in the snow as a gift to the "gods." A White Walker picks it up and brings it to an icy altar of sorts, where a group of black-shrouded figures stand watching it. One of them comes forward, touches the baby with its fingernail and the little one suddenly becomes a White Walker as well. (How White Walkers come to be is never directly explained in the books -- so mark this one down as a big reveal for the show, and a deviation of sorts from its source material.)

Tell us: What did you think of this week's episode?