7 details you may have missed in 'The Wheel of Time' season 2 episode 4

• Warning: Spoilers ahead for the first four episodes of "The Wheel of Time" season two.
• In the latest episode, numerous main characters are betrayed by those close to them.
• The biggest betrayal appears to be hinted at across the episode.

"The Wheel of Time" season two, episode four ends with a major plot twist.

Prime Video's hit fantasy show, which releases new episodes weekly, follows a group of villagers who are forced to become heroes in order to save the world from the evil Dark One. Split across the continent at the start of the new season, which premiered its first three episodes on September 1, each of the heroes is trying to learn about their abilities and next paths. However, the Dark One appears to be closing in on them as each character faces a major betrayal.

Here are the biggest Easter eggs and details to note from Friday's new episode.

The Eye of the World symbol is on Lanfear's prison.

In the opening of the new episode, Ishamael (Fares Fares) opens the prison holding the forsaken Lanfear, who is revealed to be Selene (Natasha O'Keefe) at the end.

This prison has the same symbol as the stone prison in the opening of the first episode of this season and the prison at the Eye of the World seen in the season finale of season one.

This symbol, which looks like a yin-yang diagram, was the original symbol of the sorcerers Aes Sedai when men and women worked together with One Power, a form of magic. While we have yet to see the full symbol elsewhere, it is referenced twice in the first season as a warning to certain Aes Sedai.

"Blood feeds Blood" is part of a prophecy that appears in "The Great Hunt" novel.

When Lanfear is free, Ishamael says: "Blood calls Blood. Blood Is. Blood Was. And Blood shall ever be."

This is part of a prophecy that is continued at the end of the episode when Alanna (Priyanka Bose), Maksim (Taylor Napier), and Ihvon (Emmanuel Imani) find a prophecy taken from one of the lead characters, Moiraine (Rosamund Pike).

Ihvon reads the first part out: "Daughter of the Night, she walks again. The ancient war, she yet fights. Her new lover she seeks, who shall serve her and die, yet serve still. Who shall stand against her coming? The Shining Walls shall kneel. Blood feeds blood. Blood calls blood. Blood is, and blood was, and blood shall ever be."

While this teases Lanfear, who reveals her identity in the next scene, this is also only the first stanza of a prophecy from the second "Wheel of Time" novel, "The Great Hunt."

In the novel, the prophecy is left by the Dark One's minions who invade Fal Dara and predict key events in the rest of the novel.

Kinslayer's Dagger is named after the former Dragon.

Later in the episode, Selene takes main hero Rand (Josha Stradowski) to Kinslayer Dagger, a specific mountain range near the town where they're staying. 

This is the biggest hint so far to Selene's secret identity, since Kinslayer is one of the many nicknames of Lews Therin Telamon, the former Dragon.

The fact that she links the area to her former lover, who was in fact Lews, may mean she's trying to get Rand to recover his former memories with her. In the novel series, Lanfear and Lews were former lovers, and Lanfear is said to be as powerful as Ishamael, the strongest of the Dark One's minions.

Nynaeve has a rainbow on her Accepted clothing since she has not chosen an Ajah.

When we see Nynaeve (Zoë Robins) for the first time in episode four, she is wearing her new Accepted gown.

For context, while Novices, new members of the Aes Sedai organization, have to wear grey aprons to show their servant role in the White Tower, once they move up one level, they just have to wear white gowns.

Similar to the Accepted we meet briefly in episode two, Nynaeve's wrists show all the colors of the different Aes Sedai Ajahs, which are different sections within the organization that each specialize in a certain skill. This implies that they have not chosen the Ajah they want to go into yet.

Cadsuane Sedai is an important figure in the novels.

While Alanna is talking to Lan Mandoragon (Daniel Henney) about Nynaeve, she mentions that the young woman is the quickest to go through the challenge to become Accepted since Cadsuane Melaidhrin.

This is the second time that name has been mentioned this season. Elayne (Ceara Coveney) briefly mentions Cadsuane Sedai to Egwene (Madeleine Madden) during their first meeting in episode two.

These teases may indicate that the character will be introduced soon, since she is an important figure in the novels. In the book series, Cadsuane is one of the oldest living members of the Aes Sedai and the strongest newcomer before Elayne, Nynaeve, and Egwene show up. She is also a key advisor and teacher during Rand's journey to become the legendary hero who is set to fight the Dark One in The Last Battle.

Moiraine wears blue for the first time when she returns home to Cairhien.

After Moiraine returns home to Cairhien, she dons fully blue clothing for the first time this season.

Although she no longer has access to the One Power, it seems the blue clothing (which typically signifies an Aes Sedai belongs to the Blue Ajah, the sect devoted to justice) is meant to be a show of strength and give the illusion that she has been sent by the Aes Sedai while she asks questions about Rand in the city.

The Shield has the symbol of Cairhien.

While looking for Rand, Moiraine questions a guard who we briefly see in episode two. His shield becomes visible, and viewers can see a sun symbol on it.

This is the flag of the kingdom of Cairhien, similar to the one described in the novel series.

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