Gil Grissom’s back! The first teaser for CSI’s two-hour finale has arrived with our first glimpse of William Petersen and Marg Helgenberger joining Ted Danson and other CSI alums for one last hurrah.

We also catch just a hint of Grissom and Sara Sidle’s (Jorja Fox) relationship status, as guest star Melinda Clarke asks Sidle, “Do you love him?”

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