Four veterans of the STARGATE franchise, Richard Dean Anderson (ex-Jeff, GENERAL HOSPITAL), Amanda Tapping, Michael Shanks and Gary Jones, will reprise their roles in guest stints.
Anderson plays General O'Neil, the former leader of the elite military team SG-1. Tapping plays Samantha Carter, an astrophysicist and U.S. Air Force lieutenant colonel. Shanks plays Dr. Daniel Jackson, Stargate's archeologist and linguist. Jones plays Chief Master Sgt. Walter Harriman, commander technician of the team.