After discovering a Charrid using a replica of Crichton's module to fly through a wormhole, Jack is sent by the other Ancients to track Crichton down and see if he had given away wormhole knowledge. After Crichton makes it clear he did not, the two deduce that Furlow was the one using the wormhole knowledge. The two tracked her to Dam-Ba-Da, and found the Charrids and Scarrans has turned on her. With a Scarran dreadnought on the way, Jack and Crichton planned to destroy the ship and Furlow's equipment along with the ship itself, by building a wormhole weapon. Jack intends to activate the weapon himself, not wanting to endanger Crichton's life, but Furlow shoots and fatally wound him. Crichton comforts Jack in his final moments, and after he dies, Jack reverts to his true form.