
"Stolen Memory" adds two new missions in which players take on the role of Commander Shepard, a top-tier human soldier tasked with recruiting a new team member, Kasumi Goto, and aiding her in stealing a graybox that holds crucial data and memories of her partner.
Shepard is dispatched to the Citadel, a massive space station and the political heart of the galaxy, to enlist the services of Kasumi Goto, a renowned master thief. In exchange for her assistance, Kasumi requests Shepard's help in pulling off a daring heist to break into the vault of the brutal arms dealer Donovan Hock. She reveals that Hock murdered her partner, Keiji Okuda, and seized Okuda's graybox, a neural implant containing his memories and a trove of classified, sensitive data he had gathered over the years.
| PC | April 6, 2010 |
| X360 | April 6, 2010 |
| PS3 | January 18, 2011 |