Tomb Raider Underworld: Lara's Shadow, is one of the two levels of downloadable content on Xbox Live Marketplace. It involves a brief storyline of the existence of Lara Croft's Doppelgänger, or her "Shadow". This expansion to Tomb Raider: Underworld was released on Tuesday, 10 March 2009 exclusively for Xbox Live. Like it's predecessor, Beneath The Ashes, it concludes the story that was told in Underworld.