<P> In the season eight episode "You Kill Me", Grissom indicates he has talked with her and that she is in San Francisco visiting her mother . </P> <P> Promos for the season nine premiere announced that actress Jorja Fox would return, and showed her in three clips . However, Sidle left again after the second episode . She appeared again in the final scene of the tenth episode of season nine when she appears to be working on a research team in Costa Rica, where Grissom joins her after leaving CSI . Then they are married . </P> <P> During the tenth season, Fox returned to CSI on a recurring basis . This recurring role continued until the eleventh season of the show . She is brought back by Under - Sheriff Ecklie to aid the lab, which has undergone staffing cuts as a result of Warrick's death and the resignation of his replacement, Riley Adams . Adams was revealed to have resigned as a result of Catherine's poor management and lack of teamwork; when Catherine reveals this to Sara, she reminds Catherine that Grissom had Catherine as a number two, prompting the promotion of Nick Stokes to Assistant Supervisor . </P> <P> Sara Sidle's romantic relationships have been largely unsuccessful . In the first season she named a college boyfriend, Ken Fuller, with whom she had an unsatisfactory relationship, also saying that they had joined the Mile high club (Unfriendly Skies). In season seven she mentioned a college boyfriend who cheated on her . It is unclear whether Fuller was also the boyfriend who cheated on her . In the third season she had a casual relationship with Hank Pettigrew, who was an emergency medical technician . He was involved in several of her cases, but they later broke up after she found out Hank had a longtime girlfriend . </P>

When did sara sidle come back to csi
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