While Jorja Fox returned as a recurring character later on in the series, William Petersen only came back for the show’s two-hour series finale in 2015.
William Petersen and Jorja Fox’s return to the world of CSI is a pretty big deal since they are considered the backbone(s) of the original show.
We can only hope that their return to the revival means that their romantic relationship has remained intact in the years since the original series ended.
The actors left CSI as series regulars in Season 9 and Season 8, respectively.