A measles outbreak delays arrests in a case involving pornographic photos taken by teens at a party. Meanwhile, Benson discovers that some kids' medical records may have been falsified after Noah gets measles; Amaro leans upsetting news about his son.

An unarmed black man is shot by three police officers who claim they were following proper procedure while pursuing a rape suspect. As racial tensions mount throughout the city, Barba indicts the three cops.