Memento Mori

During a dinner out, Vala is captured by the Goa'uld Athena, where she attempts to pry memories out of Vala's subconscious during her time as a host. When things go wrong, Vala develops amnesia and runs away and she must begin to piece herself back together. SG-1 eventually catches up to her and she tries to run again, but Daniel manages to get her to remember him at least and she returns to the SGC where she recovers her entire memory and becomes a full member of SG-1.