The abduction of a baby from a playground turns into a custody dispute when the kidnapper claims to be the biological mother, and an investigation ensues.
A foster couple call Stabler and Benson after their adopted daughter disappears, and initial investigation reveals an online paramour, but secrets abound.
Stabler and Benson expose a larger mystery while investigating the rape and murder of an environmental activist who was found in an industrial laundry center.
Benson finds a crime scene tampered with, and she needs an old friend's help, but the investigation leads to doubts about the victim and another detective.
An investigation reveals that a teenage girl suffers from PTSD caused by sexual abuse, and the evidence points to a billionaire whose lawyer interferes.
Burgess and Ruzek are stuck on a crowded subway train after a horrific shooting, and the team uncovers dark family dissent as they piece together the mystery.
A convenience store robbery leads the team to an unusual set of suspects who reveal a dark personal conflict; Burgess makes progress addressing past trauma.
A horrific tragedy takes the team closer to the Beck family and their dangerous ideals; Ruzek takes a risk that earns him Samantha and Richard's trust.
Bobby encounters a victim of the apartment fire that changed his life, and as he tries to make amends for past wrongs, Bobby digs into childhood memories.
Eddie's emotional affair becomes even more intense; Tommy and the 118 crew receive the Medal of Valor for their work on the dramatic cruise ship rescue.
Bobby's fate is uncertain in the aftermath of the fire at the Nash home; Athena sets forth to uncover the truth; Hen and Karin get locked in a custody battle.
A swarm of bees creates havoc on the streets of Los Angeles after a trailer with millions of bees crashes, leaving the 118 team to deal with an emergency.
Bees force a light plane off course, resulting in a crash with a passenger plane; Athena must safely deliver a prisoner set to testify on a high-profile case.
Bobby grows closer to Brad; Athena looks into the violent beating of a man found behind a grocery store; the team deals with fallout from a pipe explosion.
Faith is a way of life in a small town in Alabama, but when a resident is violently killed in his own home, rumors begin to circulate about a local pastor.