Embark on a thrilling adventure of deception and intrigue in Mark of the Assassin, the latest downloadable expansion for Dragon Age II. In this gripping new story, Hawke is joined by a mysterious elf assassin, Tallis. Voiced by none other than actress Felicia Day, this new party member comes complete with her own unique combat style and intriguing back story. With Tallis at your side, you must Infiltrate an Orlesian estate outside Kirkwall and steal a precious relic. Along the way, you will uncover an array of impressive weapons and equipment, and confront fearsome and challenging new enemies on your journey to claim the Heart of the Many.

Taken from http://dragonage.bioware.com/da2/addon/mota/