A trainer is trampled to death by her horse on a private jet when Grissom & Catherine investigate the discover that it's murder. After the horse contracts a uterine infection & dies an autopsy is preformed & a bag of uncut diomonds is discovered inside the uterus.
Sara & Warrick look into the suicide of a teenage boy in the middle of the desert. Later they discover another body, a female, and it looks like she also committed suicide.
They discover that they were both lovers & committed suicide together but when Sara & Warrick investigate further they find out that the teenagers have a baby & that the girls mother was involved in their suicides.