Diazepam is the generic name of Valium; a Benzodiazepine tranquilizer, not an antidepressant as Warrick states.
When David takes the liver temperature of the victim's body, he inserts the thermometer below the rib cage on the left side of the body. A person's liver is located primarily on the right side of the body, behind the rib cage. The way it was done, the thermometer would not have penetrated the liver.
When Alycia is taken to the morgue for the autopsy her eyelids move.
When Grissom is taking pictures of the red car, the parents come up to him and the boom mic is reflected in the rear window.