On Tonight

A headless body is discovered at the bottom of a storm drain.

When a woman is found shot through the heart, apparently by her husband, Nichols and Stevens uncover evidence that they were part of a warped psychological study.

When a pregnant woman has her baby stolen from her womb, it's a race against time to find the baby alive.

The team searches for a mother, after she abandons her injured son at a hospital.

Intelligence is forced to sort through a complicated web of clues surrounding the murder of a mother and her daughter.

Firehouse 51 enlists intelligence to help corner the arsonist they believe killed Shay.

Police suspect a woman's estranged husband in her stabbing death, but surveillance video shows he was not at the scene.

When a mother of three is found dead a mile from her home, the investigation leads to an unlikely suspect.

Teenager Justine Winter fights to survive a crash, only to learn she'll face criminal charges of deliberate homicide.

A young girl from the Midwest is murdered after visiting a medical center to receive treatment for an assault.