NEW YORK, Nov. 24 (UPI) -- Wallace Shawn, Dave Foley and Aaron Douglas have been booked as guest stars for the second half of the fourth season of the U.S. series "Eureka," Syfy said.
Season 4.5 of "Eureka" is to begin on Syfy next year. The exact premiere date has not yet been announced.
"Wallace Shawn will portray Warren Hughes, a relationship auditor sent to Eureka to shadow and report on Jack Carter (played by Colin Ferguson) and Allison Blake (played by Salli Richardson-Whitfield,)" Syfy said in a news release. "Aaron Douglas appears as Ray, the exuberant leader of 'Galaxy Camp.' And Dave Foley will appear in the season 4.5 finale as Drew Plotkin, a former weapons specialist turned eco-scientist whose research may be wreaking havoc in Eureka."
Eureka is described as a cozy, Pacific Northwest town, which serves as home to a secret community of geniuses assembled by the government to conduct top-secret research, the cable network said in a synopsis.
The show has been renewed for a fifth season.