Peter, Olivia, Walter, Astrid and Broyles face off against the Observers in one final and extraordinary battle for the fate of mankind.

An alien ship approaches Earth, sending SG-1 to an old friend for some answers — where they discover that Martin Lloyd has created a TV show about the Stargate program.

SG-1 investigates a secret N.I.D. laboratory, where a ruthless scientist has used cloning technology to create a Goa’uld-human hybrid.

Colonel O’Neill is charged with the murder of Senator Kinsey, and the rest of the team must uncover a conspiracy in order to clear his name.

SG-1 hatches an elaborate plan to try and capture Adria, using Vala as bait.

When Baal comes to Earth seeking help, Stargate Command must capture his clones and determine which one is the genuine article.

SG-1 hatches an elaborate plan to try and capture Adria, using Vala as bait.

When Baal comes to Earth seeking help, Stargate Command must capture his clones and determine which one is the genuine article.

SG-1 investigates when evidence suggests that there are still Goa’uld hiding on Earth — including a former System Lord. Tensions between Earth and the Free Jaffa continue to mount.

Barry and Team Flash are thrilled to reunite with Earth-2 Wells and Jesse. Wells confides to Barry and Caitlin that Jesse has all the powers of a speedster and has…