Who killed someone and put the body in the Luau pit?
The team kicked into action on CSI: Vegas Season 1 Episode 4 went it emerged the body could be related to a face from the past.
Meanwhile, Internal Affairs kicked off an investigation into Grissom.
Elsewhere, Sara returned to the crime lab, and had a lot of things to say about the changes.
Use the video above to watch CSI: Vegas online right here via TV Fanatic.
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