CSI regular Marg Helgenberger has announced she'll be leaving the forensics drama at the end of the hit show's 12th season.
The actress, who has portrayed Catherine Willows on the show for over a decade, has revealed she had planned to exit the cast earlier this year, but was persuaded to stay on.
, who replaced CSI producer and star William Petersen
, quit the show in May. Beloved TV star Ted Danson
will take over from him when the popular drama returns later this year.