CSI cast
(L-R) Executive producer Carol Mendelsohn, cast members Ted Danson, Marg Helgenberger, George Eads and Don McGill, executive producer of 'CSI Crime Scene Investigation', speak during a panel discussion at the CBS Television Network's 2011 Summer Television Critics Association Press Tour in Beverly Hills, California August 3, 2011. Reuters/Fred Prouser

"CSI Crime Scene Investigation" Season 15 will air its 17th and 18th episodes titled “Under My Skin” and “The End Game” on Sunday, Feb. 15, 2015 from 9:00-11:00 p.m. EST on the CBS Television Network. The "CSI Las Vegas" Team including D.B. Russell (Ted Danson), Nick Stokes (George Eads), Sara Sidle (Jorja Fox), Morgan Brody (Elisabeth Harnois), Greg Sanders (Eric Szmanda) and Julie Finlay (Elisabeth Shue) will investigate several cases including murder, kidnapping and the notorious Gig Harbor killer. Spoiler Alert! This article contains spoilers of the show’s back-to-back Season 15 finale episodes. Read only if you want to learn more about it.

“Under My Skin” (9:00-10:00 p.m., ET/PT)

"CSI Crime Scene Investigation" Season 15, episode 17 “Under My Skin,” is directed by Alrick Riley. It is written by Melissa R. Byer and Treena Hancock. TV Guide reports that in this episode, the Las Vegas forensic scientists will investigate a case that involves two missing teenage girls and a murder that is believed to be connected to it. Click HERE to see photos of this episode from the official “CSI” website.

Guest stars of this episode include Marc Vann (Conrad Ecklie), Haley King (Lexi Nolan), Owen Beckman (Kieran Clark), Larry Mitchell (Officer Mitchell), Luke Benward (Axel Vargas), Charles Addison Cochran (Pete Corday), Brett Cullen (John Nolan), Harley Graham (Cara Nolan) and Lisa Rinna (Tori Nolan).

“The End Game” (10:00-11:00 p.m., ET/PT)

TV Guide reports that in the “CSI Crime Scene Investigation" Season 15 finale, episode 18 “The End Game,” there will be a final face off between the “CSI Las Vegas” team and the Gig Harbor killer. The infamous killer’s true motive will also be revealed. Meanwhile, Nick will decide about his future. This will greatly affect his team of crime scene investigators.

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

Let us know your thoughts on the upcoming episodes of “CSI Crime Scene Investigation” Season 15. For questions/comments regarding the article, you may email the writer at j.somosot@ibtimes.com.au.

READ MORE ABOUT “CSI”:

'CSI Crime Scene Investigation' Season 15 Spoilers: Episode 16 'The Last Ride' Airs On Jan. 27, 2015, The ‘CSI Las Vegas’ Team Investigates A Massacre Involving A Rolls-Royce [WATCH VIDEO]

'CSI Crime Scene Investigation' Season 15 Spoilers: Episode 14 'Merchants Of Menace' Airs On Jan. 25, 2015, The ‘CSI Las Vegas’ Team Check Out A Convention For Murder Memorabilia To Solve Their New Case [WATCH VIDEO]

'CSI Crime Scene Investigation' Season 15 Recap: Episode 13 'The Greater Good' Aired On Jan. 4, 2015, Paul Winthrop Eludes The Cops And The ‘CSI Las Vegas’ Team Once More [WATCH VIDEOS]