Many stars of the long-running CSI franchise are expected to return for the two-hour series finale set for Sept. 27.

CBS confirmed Friday that William Petersen (Gil Grissom) and Marg Helgenberger (Catherine Willows) will go behind the yellow tape, as will Ted Danson (D.B. Russell), Jorja Fox (Sara Sidle), Jon Wellner (Henry Andrews), David Berman (David Phillips), Paul Guilfoyle (Jim Brass), Wallace Langham (David Hodges), Elisabeth Harnois (Morgan Brody), Robert David Hall (Dr. Al Robbins), Eric Szmanda (Greg Sanders), and Melinda Clarke as Lady Heather.

There will be two notable absences: Elisabeth Shue, who played Julie Finlay, and George Eads, aka Nick Stokes. As EW reported exclusively, it’s unclear how the producers will deal with Shue’s absence. Eads, in the meantime, opted not to participate, according to TVLine.

Production on the special will begin July 29 in Los Angeles. The show’s creator, Anthony Zuiker, is penning the script. Executive producers on the special include Jerry Bruckheimer, Carol Mendelsohn, Ann Donahue, Jonathan Littman, and Petersen.