Devin Crittenden

The team race against time to find a pair of troubled teenagers and put an end to a violent spree of revenge killings.

The discovery of a disembodied human brain at the scene of a car crash gives the CSI team a few headaches: it does not belong to any of the victims. Whose brain was it, and what is it doing by the roadside? DB Russell is also concerned his son is not focused on college following his suspension from school.

Kevin and Jenny search for the perfect paint colour to get back their privacy, Sofia accuses Ruxin of Breast Favouritism, and Pete tries to defend his high-school track record.