A book that i'm reading is called Among The Hidden. This book is about a family who is breaking the law secretly by having three children when you are only allowed to have two and the third child  in any family is called a shadow child because they can never go outside or be seen. But one day Luke (the shadow child) saw a third child in the sports family house and is now planning on sneaking out of the house and going outside to see the other shadow child even though it can get him into a lot of trouble.