One person in, another is out. While is welcomed back as Sara Sidle on "", an actor has to be let go because the character is not working for the whole show. The unfortunate one would be Lauren Lee Smith aka Riley Adams, the crime investigator who joined the unit in season 9.
Executive producer Naren Shankar confirmed the elimination through , specifying that Riley will not return for the 10th season. "It was an issue of how we were feeling the ensemble was working," he reasoned. "When we brought in the character of Riley, it got lost in the shuffle a little bit because we had lost Warrick, we had lost Sara, and then in the middle of last season Grissom finally left. I think, as a result, the character never quite found its footing in terms of the rest of the gang."