Stones in Glass Houses

My Name is Kara. I'm fourteen, adopted, and hate maths class. But theres something wrong with my family. My mum keeps a knife in her backpocket, my dad wont leave the house without a shotgun, and both my sixteen, and six year old brothers know how to kill a man twice their size. And me? I'm exactly the same. My whole family has a secret,and I'm no exception. Everyone has their secrets and people in glass houses shouldn't throw stones, but my secret is something else. I am something else.