Gideon, Hotchner and their team head to Mexico to aid in the investigation of a serial killer who preys on the elderly.
Unable to relax on their honeymoon, Booth and Brennan decide to help a local detective solve the murder of a Nazi war criminal; Hodgins and Angela look after Christine.
The Walkers attend a launch party for Luc's advertising campaign; Kevin must deal with a runaway juvenile delinquent; Nora receives a job offer.
Earl is surprised to find a fellow inmate (Michael Rapaport) is someone both he and Joy know.
Mulder (David Duchovny) struggles to return his life to normal as Scully (Gillian Anderson) begins to suspect that there are other reasons behind his strange behavior. With Mitch Pileggi and guest stars Michael McKean, Nora Dunn and Scott Allan Campbell.
