On Tonight

A columnist who has been given access to the squad for a story declares a hate crime case a hoax.

A single mom is arrested for child endangerment after leaving her young daughter alone for days.

Casey gets back to work after his brush with death.

Casey forges ahead at the firehouse despite signs that he may not be fully recovered from his harrowing accident.

Nearly 40 years after a high school senior is found stabbed to death in her car after visiting the mall days before Christmas, investigators identify the killer.

Fire chief Keith Bryan is shot dead in his home, leaving police to wonder who would want to slay the local hero.

Beauty queen Nona Dirksmeyer plans a future with the boyfriend she adores, then she is brutally killed; the crime shakes her hometown and exposes someone with a secret past.

Atwater goes missing and the team digs into his past to discover why he's been taken.

When a gang from El Salvador infiltrates Chicago, intelligence works with a visiting detective to put an end to the crew's brutal tactics.

Intelligence tracks down a vigilante attacking rapists.