It is Halloween in CSI and Calleigh hates it.A women is found in a haunted house upside down with two puncher holes in her neck. Horatio must find the original crime scene and find out where all of her blood is. The people working there are all suspects as no one lives in the house. Frank finds out about a book that becomes real and they have to find where the poison was from to try and kill her. The real writer of the book is being black mailed which helps the CSI's find there killer. I like this episode as it has great characters and makes a book into real life. "By the book" is there tittle as they are going by the rules of the law.
Review of By the Book
