NCIS by Cliff Lipson/CBS NCIS by Cliff Lipson/CBS

There's another shake-up brewing over at NCIS, only this time it's happening on screen.

CBS and Paramount declined comment, but sources confirm to me exclusively that a major castmember - a series regular - is on the way out. And as tempted as I am to blab this person's identity, after much soul searching, I've decided that doing so would prove WTS (Way Too Spoilery). And here's why: The actor in question will exit the series in a dramatic fashion. I might even go so far as to call it a major freakin' twist, the repercussions of which will be felt well into next season and, perhaps, beyond.

One thing I feel reasonably comfortable letting you know is that the aforementioned twist does, in fact, occur this season - i.e., sometime between tomorrow night's post-strike return and the season finale in May.

Let the guessing game begin in the comments section below!