See Also: 'Invisible Evidence' Episode Guide

CBS recently debuted the promo for this week's CSI: Crime Scene Investigation episode, "Invisible Evidence".

In the episode, the CSIs only have 24 hours to drum up new evidence to convict a killer after a key piece of evidence is thrown out of court. Former 24 star Xander Berkeley makes his debut as the new sheriff of Las Vegas County, Rory Atwater.

The 30-second trailer is available for download online from the official CBS web site. For those of you with slower connections, here's a transcript:

[Quick shot of a teenage girl, Rachael Lightford.]

[The camera pans over photos of Rachael laid out on the desk.]

Catherine: (off-screen) "Rachel Lightford, 19."

[Nick takes a photo and looks at it.]

[Catherine hands out photos to the other CSIs.]

Catherine: "Murdered in her apartment."

[In the apartment, Catherine is on her hands and knees, searching for evidence.]

THURSDAY ON 'CSI' KEY EVIDENCE IS THROWN OUT OF COURT

[Shot of a busy courtroom.]

[Text: 'Thursday']

[Warrick is sitting in the witness box.]

[Close-up of a pair of hands holding a bloody knife.]

[A lawyer addresses the courtroom.]

Lawyer: "That knife was the product of an unlawful search."

[The camera pans over to Grissom sitting in the courtroom.]

[Angle on Warrick in the witness box.]

[The judge delivers a grim verdict.]

Judge: "If you can't make your case, Mister Fife walks."

[The victim's family look on in horror.]

[Text: 'TV's Most-Watched Show']

[The judge bangs his gavel.]

[Text: '24 Hours']

Grissom: (off-screen) "For the next 24 hours..."

[Grissom walks out of the courtroom with Warrick.]

Grissom: "...we're breaking the rules."

[Text: 'Will Make']

[Nick and Sara stand outside together.]

Sara: "What the hell happened?"

[Text: 'Or Break']

[A distressed woman stands in the middle of the crime lab, shouting.]

Distressed Woman: "Does anybody care?"

[Technicians turn around and look at the woman.]

[Text: 'Their Case']

Nick: (off-screen) "She just wants to know that someone around here..."

[Warrick gets up from his set to confront Nick.]

[Nick continues regardless.]

Nick "...gives a damn, Warrick."

[Text: 'Don't']

[Grissom gazes into a microscope.]

[Text: 'Miss']

[Sara stands up against the wall as Grissom tests out a theory.]

[Text: 'One']

[Catherine shines her torch.]

[Text: 'Minute']

[Warrick bangs his head against a locker.]

ALL-NEW 'CSI' CBS THURSDAY

[Text: 'CSI: Crime Scene Investigation - New Episode - Thursday - 9/8C']

To download the trailer in streaming Real Media format, head over to the CBS web site.

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