Jennifer Estlin

Lindsay (Sophia Bush) goes undercover in an effort to track down a rogue police officer targeting women leaving a local casino. When Detective Martin Watts (guest star Erik Jensen), who oversees all cases out of the casino, gets word of the investigation he becomes involved much to Voight's (Jason Beghe) dismay. After recent events, Burgess (Marina Squerciati) sets plans in motion to transfer Districts pending Platt's (Amy Morton) approval, and Mouse (guest star Samuel Hunt) attempts to lift Ruzek's (Patrick Flueger) spirits by offering to set him up with a friend. Meanwhile, Antonio (Jon Seda) volunteers to take Roman's (Brian Geraghty) place in the upcoming boxing match against Jimmy (guest star Steven R. McQueen) from Firehouse 51.

Detectives Briscoe (Jerry Orbach) and Curtis (Benjamin Bratt) investigate when two teachers are shot in a high school parking lot and a group of male students have sex with a developmentally disabled girl in an unused part of the school. McCoy (Sam Waterston) and Ross (Carey Lowell) must prove the case involves rape instead of consensual sex because they believe the girl did not have the sense to say no. S. Epatha Merkerson and Steven Hill also star.

Detectives Briscoe (Jerry Orbach) and Curtis (Benjamin Bratt) investigate the murder of a police officer found stabbed in Central Park. The killer's sudden religious 'conversion' forces McCoy (Sam Waterston) and Ross (Carey Lowell) to battle over the death penalty. The outcome of the case and an old enemy's (guest star Robert Vaughn) grudge endanger Schiff's (Steven Hill) chances for re-election. Meanwhile, Briscoe finds himself in a tough spot after his daughter is arrested for dealing drugs. Cliff Gorman also returns to guest-star as Judge Gary Feldman. S. Epatha Merkerson also stars.

After witnessing the lethal injection of Mickey Scott, Briscoe, Curtis, McCoy and Kincaid react in four very different ways. This form-breaking episode follows the four main characters individually through their day to capture the unique and personal effect the execution has on each of them. Jennifer Garner (Alias) guest stars.