CSI Season 14 Spoilers: Marg Helgenberger To Return on the 300th Episode

CSI Season 14 Spoilers: Marg Helgenberger To Return on the 300th Episode

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Marg Helgenberger is set to reprise her role as Catherine Willows on CSI's upcoming 300th episode, TV Line has learned exclusively. In retrospect, Helgenberger has departed the series midway through season 12.

Executive producer Don McGill teased about Willows' comeback and said that Helgenberger's return will be shown via a series of recreated flashbacks or "faux-backs". Keep reading for the spoilers revealed by the showrunner below:

“We were just really excited to have Marg come back because, obviously, she’s such an important part of the history of CSI,” executive producer Don McGill shares. “And she was super excited. It was kismet!”

The milestone hour, airing later this fall, centers on a fictional cold case, one that “takes our characters back to the beginning,” McGill reveals. “They have to investigate a murder with the same M.O. and the same suspect from 14 years ago.”

“We will flash back 14 years to seminal moments that show Catherine, Nick (George Eads), Sara (Jorja Fox), Greg (Eric Szmanda) and Ecklie (Marc Vann) as they were, [and how that] informed the evolution of the characters now. It’s going to be a really fun episode, very emotional, that honors 14 years of CSI.”

CSI launches its 14th season Wednesday, Sept. 25 at 10/9c.