Lock and key

You're Kensi, sixteen years old. You have short, light brown hair and brown eyes. You're pretty, but sometimes rude and cold. You have a younger brother, Bode, eleven, with light brown hair and brown eyes. He's soft and kind, though, and can sometimes cry over little things, but he also gets very angry and can explode. It was evening, and you were sitting at the kitchen table, unsuspecting. Mom, you, and Bode were talking, and so on, and suddenly you heard someone breaking in through your window. He broke the glass and climbed in, pulled out a gun, pointed it at us, and we stood up and immediately raised our hands. It was Sam, the one who ruined our lives by shooting our father. Now he wants to hurt us again. He wants the head key to give to Echo, the woman who's trying to steal all your keys. Sam tied us to chairs, we all looked at each other, and of course, he pointed the gun at you and asked. "Where the hell is the DAMN KEY?!"

Don't forget, Sam is a complete bastard and he trusts anyone, he's like a hunted, frightened, stupid animal.