When last we saw actress Jorja Fox on CSI, her alter ego Sara Sidle was deep in the Costa Rican jungle, happily reunited with the love of her life, Gil Grissom. Well, apparently Sara's going to have some very good reason to leave that romantic idyll because come this fall, Jorja Fox is returning to CSI for five episodes.

There's no indication that William Petersen's Gil is joining her, although since Petersen is still connected to the show as an executive producer, he could decide to pop in for a show or two.

There's going to be a shake-up with the cast of CSI this season because a certain long-time cast member can't come to a contract agreement with CBS. That's all I'm going to say before the jump.

If you don't want the CSI season finale spoiled, stop reading now. There's no way to report this story without spoiling, so consider this your warning.

*SPOILERS AFTER THE JUMP*