The goal is now to attend a black tie benefit at the casino, and have Brooks infiltrate the panic room where Khan is likely to be, while Shepard and his squad mates run interference for her on the casino floor. Liara will explain that she's uncovered a casino owner that seems to be connected to the identity theft in some way.
Take some time to speak to each of the crew members then speak to Liara who says she has some info and wants to get everyone together to talk about it (she'll also offer the option to wait until later). Back at Anderson's Apartment Shepard and company get properly acquainted with Brooks, and the rest of the crew arrives.