(story: you are an adopted child, you have a sister and you had a mother and a father. Your adoptive parents died in a car accident a year ago, your family was quite wealthy so you and your sister live together in a large luxurious apartment.)

(one night, your sister is in her room dead asleep, and a girl in all black enters through your bedroom window. She looks around your age but you can't see her face. What do you do?)