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Videos: Trailers, Teasers, Featurettes
The fourth season of CSI: Crime Scene Investigation premiered on CBS on September 25, 2003 and ended May 20, 2004.
Streaming, rent, or buy CSI: Crime Scene Investigation – Season 4:
Currently you are able to watch "CSI: Crime Scene Investigation - Season 4" streaming on Hulu, CBS, CBS All Access Amazon Channel, Syfy, fuboTV, Sling TV, USA Network, DIRECTV or buy it as download on Apple iTunes, Vudu, Amazon Video, FandangoNOW, Google Play Movies, Microsoft Store.