Ian Bamberg

The hunt for a methodical killer takes the BAU to Arizona to search for an increasingly devolving UnSub, and the team speculates that Hotch is in the running to be the new BAU unit chief.

As Frankie and Mike wish each other a happy "20-somethingth" wedding anniversary, Axl decides that he and Hutch need to class up their broke-down house and find another roommate to help with expenses. But while helping Axl track down a dining room table to help spruce up his house, Frankie finds a full dining set on sale online for $50 and ends up giving Axl the Heck house dining room table, while she excitedly looks forward to her new purchase. Meanwhile, after being presented with a special necklace to proclaim his love, Sue becomes angry with boyfriend Darrin when she discovers that he had also given the same gift to his former girlfriend; and Brick begins a podcast. Jimmy Kimmel guest stars as himself.

Five-0 must find a kidnapped patient infected with a contagious and lethal strain of bird flu which the culprits intend to weaponize. Terry O'Quinn returns as Joe White.