Season Ten
SG-1 hear of a new Ori Prior and are shocked to discover it is the missing Daniel Jackson.
They capture him, restraining him using the anti prior device. Daniel's pleased to see them and explains that as he still has Merlin's consciousness inside him, he's not been affected by the conversion.
Daniel wants SG-1 to turn off the wormhole that's blocking the Ori super gate, so that he can use Merlin's weapon against them.
Can SG-1 trust him, or is it all part of Adria's plan?