Casey Nelson

When Summer and Marissa receive invitations for famous actor Grady Bridges' birthday party in LA, the girls decide to take Ryan and Seth along with them to join in the fun.

The BAU team face of their toughest cases yet when a prolific, border-crossing serial killer leads them on a hunt into Canada.

Hotcherners' team is called to Texas, where they try to apprehend a serial killer who kills and beheads illegal immigrants from Mexico who are trying to cross the border into the United States at the border town of Terlingua.