Ghost Hunters is already Syfy’s longest-running original reality series. Now the unscripted veteran is extending its run with an eighth-season pickup. The 20-episode eighth season will premiere on Syfy in 2012. To date, the current seventh season has averaged 1 million in adults 18-49. Since its 2004 premiere, Ghost Hunters has spawned two spin-offs, with over 200 episodes among the three series.