LOS ANGELES, Aug. 20 (UPI) -- Former "CSI: Crime Scene Investigation" star Marg Helgenberger is to return for the Las Vegas-set crime drama's 300th episode, CBS announced.
Helgenberger was a cast member of the show for 12 seasons before leaving in January 2012. She will reprise her role of Catherine Willows and help solve a cold case that has haunted the CSI team for 14 years in the episode to air Oct. 23.
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