The BAU searches for a kidnapper after an emaciated boy is found in an Arizona desert and another boy disappears. Morgan uses his own scarred past to bond with the rescued kid.
NCIS investigate a ring of clever teenage partygoers when a string of break-ins take place at Marine Base Quantico. While working the case, Agent McGee forms a bond with one of the teens.
Deputy Director Ochoa tasks the team with a covert operation focused on dismantling a terrorist group. Callen worries about what the assignment means for the future of the team.
When the team and Walter's parents visit Megan in the hospital, a deadly fungal outbreak occurs, forcing everyone into quarantine.
As S.W.A.T. pursues a bomber who’s using an app to mail deadly packages, Chris (Lina Esco) prepares to face off against Street (Alex Russell) and Tan (David Lim) in the master gunner competition.