Jason Sweat

Catherine and Brass investigate when dominatrix Lady Heather is almost strangled to death at a Wild West theme park. Meanwhile, Warrick and Nick look into the death of a young woman apparently hit by a taxi cab.

A brutal motorcycle gang murder takes place in a biker bar. Due to the nature of the killing, there are multiple suspects. The case takes an unexpected turn when it emerges that an undercover cop had infiltrated the biker gang, and was close to exposing a major drug operation.

Members of the team come under attack from old nemeses, teen bomber Jason McCann pursues a vendetta against the CSIs after his brother died at their hands, and Ray faces serial killer Nate Haskell.