Project Identity

It's said that every person has three different personalities; one when they're alone, one when they're around the family, and one when they're around friends. But what happens when you can't remember any of them? What happens when you can't remember what your family's social status is, nor how many friends you have? What happens when you find yourself stuck in a foreign house with nine complete strangers, with absolutely no clue of who you are, no name, nothing but a small number? Would you be able to pick your name out of ten given identities, or would your personality blossom In a completely different direction?