Billy stopped by the set to celebrate 250 episodes of CSI. A couple of photos from the celebration have been posted c/o Anthony Zuiker.
Edited to add a further image can be found on the CBS TV Studios Insider Tumblr.
Edited once again to add TVLine’s and EW’s articles regarding the celebration, both include great photos.
- From EW – ‘CSI’ celebrates another milestone. And Billy Petersen was there to cut the cake!
- TVLine – First Look: William Petersen Returns to CSI… But There’s a Catch