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CSI - S04E01

Crime . Drama . Mystery . Thriller

One of two couples who meet in a bar is murdered and, when the second couple meets the same fate in a similar fashion, the team suspects a pair of serial killers is on the loose. Catherine gets some troubling news about her father's murder trial.

Episode Title: Assume Nothing (1)
Airs: 2003-09-25 at 10:00 pm