The conviction of a group of sociopathic high school bullies who turned on one of their own escalates into even more violence and death in their exclusive private school.

When a wealthy couple is found dead in their home, Benson and Stabler soon realise that their deaths are connected to a drug smuggling ring. Eventually the road leads back to the same drug dealers who forced a former assistant district attorney into hiding, and Alex Cabot comes home to face her enemies.

Stabler and Tutuola pair up to investigate when two teens go missing while their school is on a field trip to a local museum. Their investigation soon turns up evidence that the disappearance was staged to help Janey, who suffers from Turner's Syndrome, be with her older boyfriend, a man with a prediliction for young girls, and to help the boy, Connor, make good on a gambling debt. Stabler experiences a rift with his daughter, Kathleen, who is upset over the way that he has handled her relationship with a young man named Kevin.

Novak confronts ghosts from her past while handling the trial of a schizophrenic serial rapist, who seriously injured Stabler.