Based on the appearance of Torres and her dialog, The Lost & Damned will bring players back to the mission Blow Your Cover, from GTA IV. In the mission, Niko follows Playboy X and Johnny Klebitz (the protagonist in Lost & The Damned) to a heroin deal that eventually goes horribly wrong. Other moments from The Lost & Damned are said to weave into the original GTA IV story, where Johnny Klebitz was a supporting character during a pair of key missions.
GTA IV: The Lost & Damned will release on February 17, for 1600 ($19.99 US). The full trailer can be found after the break.