Marshall deals with feelings of inadequacy when working with his dad, who visits Albuquerque to round up fugitives with outstanding warrants. Elsewhere, Brandi returns home with an odd explanation for her disappearance and a guest in tow.

A witness with Asperger's refuses to testify against her friend, frustrating Mary. Elsewhere, Marshall and Stan try to prevent the deportation of a key witness, and Brandi comes clean about her investment plan with Scott.