The Best Episodes Written By Gwen Sigan

As the monthslong investigation into the serial killer reaches its close, Voight must outsmart the offender in a race against the clock. Upton must make a vital decision.

Director: Chad Saxton

Writer: Gwen Sigan

Voight and the team muster all their expertise to bring down a deadly crime ring. Burgess finds herself in a dangerous situation.

Director: Chad Saxton

Writer: Gwen Sigan

With the FBI closing in on the Roy Walton investigation, Voight and Halstead strategize on a way out. After a city bus driver is shot by a passenger, the team investigates a possible abduction.

Director: Lisa Robinson

Writer: Gwen Sigan

Tasked with shadowing a crisis prevention team, Upton finds her approach to policing at odds with the team's mental health clinician. Voight stands by Upton as she continues to struggle in her personal life.

Director: Chad Saxton

Writer: Gwen Sigan

When a P.D. informant is murdered, the team digs in to track down the perpetrator only to learn a shocking truth. Voight and Ruzek strategize to help Burgess.

Director: Vincent Misiano

Writer: Gwen Sigan

Upton becomes consumed with a decades-old missing persons case linked to Petrovic after a young child shows up to the district seeking help.

Director: Brenna Malloy

Writer: Gwen Sigan

Intelligence chases down a lead in the ongoing serial killer investigation as news of the case reaches the public.

Director: Jesse Lee Soffer

Writer: Gwen Sigan

When Upton and Ruzek answer an emergency call to an abandoned house, their investigation leads them down a dark path.

Director: Carl Seaton

Writer: Gwen Sigan

Voight and the team delve into a cold case in search of clues to solve a shocking new crime. With its focus on buried memories, the case sparks concern for Burgess and Ruzek about Makayla's mental healing.

Director: Benny Boom

Writer: Gwen Sigan

As Richard Beck's timeline for a deadly attack moves up and Samantha panics, Ruzek and the team scramble to get ahead of unprecedented disaster.

Director: Chad Saxton

Writer: Gwen Sigan

Halstead's partying with Camila unintentionally puts him in the middle of a drug-related homicide. He's forced to choose between loyalty to his unit and his girl. Meanwhile, Voight finally discovers the mole in his unit.

Director: Carl Seaton

Writer: Gwen Sigan

Still reeling from the death of informant Anna, Voight faces a new threat as he tries to keep the neighborhood clean. New wrinkles develop in the Upton, Halstead and Voight dynamic. The team gets a new chief.

Director: Chad Saxton

Writer: Gwen Sigan

An ongoing case hits close to home for Voight as Intelligence teams up with an SVU detective to track down a prolific offender.

Director: Chad Saxton

Writer: Gwen Sigan

While out for a jog, Upton witnesses a horrible car crash and risks her own life to save the passengers. After learning more about the victims, the team must track down the man responsible for the brutal crash.

Director: Chad Saxton

Writer: Gwen Sigan

A young girl is shot and Cosgrove teams with Det. Jalen Shaw to track down her killer. Benson and Stabler assist and realize it's more than a typical homicide. McCoy and Price seek justice against an international crime ring, but complications threaten the case. The crossover continues on Law & Order: Special Victims Unit S24E01 Gimme Shelter (II) and Law & Order S22E01 Gimme Shelter (III).

Director: Jean de Segonzac

Writer: Gwen Sigan

When a young officer is shot dead in the lobby of an apartment building, Intelligence looks to the latest known offenders who have threatened the police. But when a second officer is killed, the team finds that they are dealing with someone who is highly trained and knowledgeable.

Director: Terry Miller

Writer: Gwen Sigan

Ruzek and Burgess discover a child walking alone in the middle of the street, and when they take her home, they discover that her entire family has been murdered. Upton is approached with a job offer from the FBI.

Director: Eriq La Salle

Writer: Gwen Sigan

Intelligence investigates a string of bombings targeting members of the media. Racing against a ticking clock, the team enlists Firehouse 51 to help examine the devices and prevent the next attack. The crossover continues on Chicago Fire S06E013 Hiding Not Seeking (II).

Director: Eriq La Salle

Writer: Gwen Sigan

The body of a 15-year-old girl is found crushed in an abandoned building after she runs away from a treatment center for troubled girls. Voight sends Halstead undercover as a guard to work from the inside at the center, where he believes the girls are trading sexual favors for something in return.

Director: David Rodriguez

Writer: Gwen Sigan

In the wake of several gang-related child abductions, Intelligence must race against time to find a kidnapped boy. Owing to their swiftness and military precision, the team scours the VA records and tracks the suspects to a former Army Ranger. With his previous experience as a Ranger, Halstead convinces Voight to send him undercover to try and get information from inside.

Director: Lily Mariye

Writer: Gwen Sigan

Using information from Chicago Fire's Cruz, Intelligence chases down the robbery crew that’s been using the lockbox key. Voight is under pressure to bring the crew to justice without tarnishing the reputation of a murdered firefighter who might have been involved. The crossover starts on Chicago Fire S07E15 What I Saw (I).

Director: Donald Petrie

Writer: Gwen Sigan

A wellness check on a family reveals signs of foul play and Upton is determined to find the parents and young daughter. As Hailey delves further into the troubled family dynamics, she finds herself reflecting on her own childhood trauma.

Director: Bethany Rooney

Writer: Gwen Sigan

After an explosion rocks the case, the team scrambles to finally take down Escano as everyone nears their breaking point.

Director: Chad Saxton

Writer: Gwen Sigan

Upton's dogged pursuit of a missing teenage girl leads the team into a dark web of human trafficking. Chief O'Neal becomes involved with the unit's investigation when it becomes evident his son, Sean, has a connection to the missing girl.

Director: Chad Saxton

Writer: Gwen Sigan

Firehouse 51 unites to help a young boy in tragic circumstances. A high-powered political consultant helps Casey navigate a potential scandal. Cruz makes a mistake that nearly costs him his life.

Director: Fred Berner

Writer: Gwen Sigan