|4 x 4|
|Original Airdate||March 31, 2004|
|Previous Episode: Spark of Life|
|Next Episode: Hollywood Brass|
4 x 4 is the nineteenth episode of season 5 of CSI: Crime Scene Investigation
It's a busy night in the lab as the CSIs investigate four cases: A hit and run involving a stolen Hummer, the murder of a Convention Girl, the death of a body builder, and the death of a boy found on a bench.