CSI: Crime Scene Investigation S04E23 - Bloodlines

Episode Overview

On her way home from work, a casino staff member is brutally assaulted, but she manages to survive and points out her attacker. However, a DNA test unexpectedly clears him of wrongdoing, prompting Grissom to grapple with the reliability of evidence. Meanwhile, Grissom finds himself helping a colleague who finds trouble on the wrong side of the law.

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