CSI episode 107

The story began when a teenage girl ran outside to search for help. Her father, her mother and her two brothers were dead, killed by a person. The only survivors were her and the little girl of the family. Gil Grissom was called to supervise inquire. Sarah Sidle was called to accompany the little girl to the hospital to know if the girl was hurt. Catherine joined Gil for the inquiry. They suspected the boyfriend of the teenager. He killed them, because the teenager asked him to do it. She asked him because she didn’t want her father to rape the little girl like he did with her. The little girl was her daughter and the daughter of her father. She was born out of incest. Gil and Catherine resolved the inquiry and Sarah discovered that she likes kids.