The first trailer for the second episode of the BioShock Infinite: Burial at Sea DLC. Note that this trailer contains spoilers if you have not played the first episode.
"See the world through the eyes of Elizabeth after the dramatic events of Burial at Sea - Episode One as she continues her journey through Rapture in an effort to rescue Sally. Explore new areas of Rapture built almost entirely from scratch in the BioShock Infinite engine. BioShock Infinite: Burial at Sea -- Episode Two can be purchased as part of the BioShock Infinite Season Pass, which contains both Burial at Sea episodes, the Clash in the Clouds add-on pack, and other free exclusives at a significant discount."