It's Marcos Gallery. I did come up with another plan but that one failed as well XD. I am starting to think they are only ment to be for real detectives :)
Those two are unlocked if you bring Matt to orientation with you. At the start of the game, choose to go see his apartment, and then ask him to join you at orientation. All you need to do then is play through the rest of the night and they'll both unlock 🙂
