The CSIs discover that Vail was involved in a struggle with a former friend who was trying to "save" her from her current fetish, ultimately leading to her death.
Beyond the case, Ray Langston uses his time with Lady Heather to confront his own inner demons regarding his obsession with the escaped serial killer Nate Haskell. The B-Story: Tragedy and a Miracle [S11E19] Unleashed
The primary investigation begins when a woman, identified as social worker Iona Vail, is found seemingly mauled to death by a mountain lion in the woods. However, Langston and Sara quickly realize the scene is staged—Vail was wearing a leotard in rugged terrain and had been restrained and attacked with a stun gun before the animal got to her. The CSIs discover that Vail was involved in
The trail leads the team into a subculture of people who act like animals. To navigate this world, Langston and Sara turn to (Dr. Heather Kessler), a long-time friend of Grissom who is now working as a sex therapist. However, Langston and Sara quickly realize the scene
In a rare moment of hope for the show, Nick and Dr. Robbins perform an emergency C-section on-site, successfully saving the unborn baby.