VIDEO: New Game of Thrones Trailer Promises Revenge

Revenge is on the minds of many Game of Thrones characters when the HBO drama returns for its fourth season next month.

A new trailer that premiered during Sunday's True Detective finale kicks off with Sansa Stark (Sophie Turner) mourning the loss of her mother and brother, who were killed during last season's infamous Red Wedding. "I lay awake all night thinking about how they died," she tells Tyrion (Peter Dinklage).

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Elsewhere, Daenerys (Emilia Clarke) is preparing to unleash her dragons — who are all grown up now! — in an effort to meet injustice with justice, and Jon Snow (Kit Harington) returns to find that the world he knew has fallen apart.

Check out the new trailer, called "Secrets," below:

Game of Thrones kicks off Season 4 on Sunday, April 6 at 9/8c on HBO.