
Mother's Day
The hit-and-run death of a popular high-school student leaves the detectives suspecting the girl's father was the real target. When evidence reveals that the death was possibly a random killing, they are able to track down their suspect to his apartment. However things get complicated when their killer is murdered, and the person who committed the crime happens to be the victim's mother.
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More from this season

S13 E1
American Jihad
An American Muslim becomes the prime suspect in a double murder after an academic challenges his religious beliefs.

S13 E2
Shangri-La
The murder of a female high school English teacher uncovers a love triangle that includes a female student and a male teacher, both of whom become suspects. The prosecutors have to deal with the student's multiple identities and refusal to live past adolescence.

S13 E3
True Crime
Investigating the death of a rock band singer who had large amounts of cocaine and heroin in her system, the detectives question a former boyfriend who was a disgruntled band mate of her late husband. The prosecuters are hampered by the actions of a retired detective, who worked a case with Briscoe several years back, turned writer whose unconventional research tactics makes him a suspect as well.

S13 E4
Tragedy on Rye
A struggling actress is murdered in an apparent robbery-homicide where a video tape, made by a couple touring the city sold to a local news station, shows three suspects loading the stolen property into an SUV. They are charged with felony murder, a capital crime, and causes unrest with Southerlyn surrounding the death penalty.