The anticipation for Game of Thrones' fourth season just keeps building. With the premiere date less than a month away, HBO has decided to tease fans even further with the release of a third trailer.

The new promo, titled "Secrets," opens up with a grief stricken Sansa Stark, sharing her woes about The Red Wedding.

"Do you know what they did to my mother and my brother?" she says to future husband, Tyrion. "I lie awake all night thinking about how they died."

Viewers are then treated to a scene of new character, Oberyn Martell, seemingly plotting something with the calculating Cersei.

 "What good is power if you cannot protect the ones you love?" Cersei asks.

"We can avenge them," Martell replies.

There is also a great scene of Tywin sitting on the Iron Throne. "We mustn't disappoint father," says Tyrion as he looks on bitterly.

Daenerys, mother of dragons, manages to steal most of the spotlight. Her dragons have clearly grown, and so has Dany's drive to take the Iron Throne.

"Sometimes it is better to answer injustice with mercy," Ser Barristan Selmy advises her.

"I will answer injustice with justice," Daenerys replies resolutely.

As a further tease, HBO has also released summaries for the first four episodes of season 4.

Episode 1, "The Two Swords":

"Tyrion (Peter Dinklage) welcomes a guest to King's Landing. At Castle Black, Jon Snow (Kit Harington) finds himself unwelcome. Dany (Emilia Clarke) is pointed to Meereen, the mother of all slave cities. Arya (Maisie Williams) runs into an old friend."

Episode 2, "The Lion and the Rose":

"Tyrion lends Jaime (Nikolaj Coster-Waldau) a hand. Joffrey (Jack Gleeson) and Margaery (Natalie Dormer) host a breakfast. At Dragonstone, Stannis (Stephen Dillane) loses patience with Davos (Liam Cunningham). Ramsay (Iwan Rheon) finds a purpose for his pet. North of the Wall, Bran (Isaac Hempstead Wright) sees where they must go."

Episode 3, "Breaker of Chains":

"Tyrion ponders his options. Tywin (Charles Dance) extends an olive branch. Sam (John Bradley) realizes Castle Black isn't safe, and Jon proposes a bold plan. The Hound (Rory McCann) teaches Arya the way things are. Dany chooses her champion."

Episode 4, "Oathkeeper":

"Dany balances justice and mercy. Jaime tasks Brienne (Gwendoline Christie) with his honor. Jon secures volunteers while Bran, Jojen (Thomas Brodie-Sangster), Meera (Ellie Kendrick) and Hodor (Kristian Nairn) stumble on shelter."

Game of Thrones will return to HBO on April 6.