Kai Caster

When a death occurs in Nick's family, Jess, Schmidt and Winston travel with Nick to the Windy City to help him with the funeral preparations and meet his boisterous family members, including his mum, Bonnie.

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.