A CBS series called "Orpheus" sounds like it involves a fictional cult based on Scientology. In the pilot script, a group called GD or "Grand Design" is based on a popular "quasi-philosophical" book that resembles Hubbard's Dianetics. Members of the group are ranked, with a level called "Galatean" that may be equivalent to an Operating Thetan (OT) level. A CBS Paramount spokesperson said that "The cult is an amalgamation of all cults throughout history." The show stars Nicholas D'Agosto and Mena Suvari, and is being produced by Nicholas Meyer.
Let's hope Tom Cruise doesn't cause this to be killed--it is another Paramount property, like Mission Impossible 3, so the possibility is certainly there.