THE CSIs FACE THEIR FINAL SHOWDOWN WITH THE GIG HARBOR KILLER, ON THE 15TH SEASON FINALE OF "CSI: CRIME SCENE INVESTIGATION," SUNDAY, FEB. 15

"CSI" Will Air Two Back-to-Back Original Episodes to Conclude the Season

Lisa Rinna Guest Stars in the First Hour as Tori Nolan, The Wife of the Director of the San Diego Crime Lab

Guest Stars in the 15th Season Finale Include Mark-Paul Gosselaar as Paul Winthrop, Mark Valley as Detective Daniel Shaw and Eric Roberts as Daniel Larson

"Under My Skin" - The CSI team investigates a murder with ties to two teenaged kidnapped girls, on the first of back-to-back original episodes of CSI: CRIME SCENE INVESTIGATION, at a special time, Sunday, Feb. 15 (9:00-10:00 PM, ET/PT), on the CBS Television Network. Lisa Rinna guest stars as Tori Nolan, the wife of the director of the San Diego Crime Lab.

"The End Game" - The CSI unit faces the final showdown with the Gig Harbor killer whose motives are finally revealed. Meanwhile, Nick Stokes makes a decision that will affect the entire team moving forward, on the 15th season finale of CSI: CRIME SCENE INVESTIGATION, Sunday, Feb. 15 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Guest stars include Mark-Paul Gosselaar as Paul Winthrop, Mark Valley as Detective Daniel Shaw and Eric Roberts as Daniel Larson.

REGULAR CAST FOR "UNDER MY SKIN":

Ted Danson (D.B. Russell)
Elisabeth Shue (Julie Finlay)
George Eads (Nick Stokes)
Jorja Fox (Sara Sidle)
Eric Szmanda (Greg Sanders)
Robert David Hall (Dr. Robbins)
David Berman (David Phillips)
Wallace Langham (David Hodges)
Elisabeth Harnois (Morgan Brody)
Jon Wellner (Henry Andrews)

GUEST CAST FOR "UNDER MY SKIN":

Marc Vann Larry Mitchell (Conrad Ecklie)
(Officer Mitchell)
Haley King (Lexi Nolan)
Harley Graham (Cara Nolan)
Luke Benward (Axel Vargas)
Charles Addison Cochran (Pete Corday)
Brett Cullen (John Nolan)
Owen Beckman (Kieran Clark)
Lisa Rinna (Tori Nolan)

WRITTEN BY: Melissa R. Byer and Treena Hancock

DIRECTED BY: Alrick Riley

REGULAR CAST FOR "THE END GAME":

Ted Danson (D.B. Russell)
Elisabeth Shue (Julie Finlay)
George Eads (Nick Stokes)
Jorja Fox (Sara Sidle)
Eric Szmanda (Greg Sanders)
Robert David Hall (Dr. Robbins)
David Berman (David Phillips)
Wallace Langham (David Hodges)
Elisabeth Harnois (Morgan Brody)
Jon Wellner (Henry Andrews)

GUEST CAST FOR "THE END GAME":

Marc Vann (Conrad Ecklie)
Mark-Paul Gosselaar (Paul Winthrop)
Mark Valley (Daniel Shaw)
Eric Roberts (Brother Daniel Larson)
Larry Mitchell (Officer Mitchell)
Barry Bostwick (Collin Winthrop)
Brandon P. Bell (Kyle Ellis)
Kathryn McCormick (Nicole)
Shannon Baker (Amelia Vance)
Shauna Baker (Margo Vance)