Benson and the team investigate the death of a prostitute at a brothel. They wonder if there was foul play or if this could be a case of a junkie who relapsed, turned to tricking, got depressed and committed suicide.

The squad spends New Year's Eve tracking down an Amber Alert, and Carisi faces off against Counselor Rafael Barba in an emotional courtroom battle.

A high-profile activist suspects her sister has been kidnapped by a hate group.

While Fin and Phoebe make wedding plans, Benson and Rollins try to help a homeless single mother who’s being trafficked in exchange for safe housing.