Marg Helgenberger has booked her return to CSI.

The veteran actress, who will help anchor Intelligence on CBS in early 2014, will reprise her role of Catherine Willows on the drama's upcoming 300th episode.

The episode will air on Wednesday, October 23 and center on a cold case that has remained unsolved for 14 years, as the team investigates the killing of a casino mogul who was a suspect in a similar crime back in 2000.

Helgenberger left the smash drama in 2012 and was essentially replaced in the cast by Elisabeth Shue.

CSI Season 14 kicks off on September 25.

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