The BAU head to New Hampshire to investigate a double homicide and kidnapping. Rossi plans to take his relationship with Krystall to the next level, but things don't go to plan.
D.B. Russell transfers from Las Vegas to become the director of the new division; Avery considers a career move; Krumitz is a witness in his sister's trial; Elijah deals with a domestic situation.
A Department of Justice agent requests Sam's assistance as he searches for a former US Border Patrol tactical officer who went missing following a threat by the cartel.
After reconnecting with Kate, Walden becomes convinced she is the one for him, until he meets a woman named Vivian.
Jimmy and Sara go to great lengths to determine who bit Edie at school. Meanwhile, Gerald and Vanessa meet with a tech investor.