CBS

Season 10: Episode 13 - Internal Combustion

Internal Combustion: In a tale of teen drag racing a la James Dean and the 1950s, our CSIs get caught up in the mystery of what happened to a young man who drops dead at school with a severe brain adema and his girlfriend who has gone missing. The details of the case lead the CSIs to the underbelly of street racing, and souped up drag racing cars. They investigate the  father of the young girl's best friend, who is also an auto shop teacher at school. The trail leads back to him and his daughter in a tangeld web of deadly competition.