The site, sfuniverse reports:
Battlestar Galactica’s James Callis, aka Gaius Baltar will be creating a little havoc for Don and the team on the season finale of Numb3rs. Callis is playing a “charismatic sociopath” who kidnaps someone very close to Charlie making this crime more personal than ever!
It all happens on Friday, May 15 (10:00-11:00 PM, ET/PT) on the CBS Television Network.
I wonder if he gets a harem in the episode?