When Lindsay is tipped off about a grieving father looking to avenge his daughter's death, Olinsky goes undercover as a hitman-for-hire. With Gang Intelligence lacking enough evidence to arrest the original gangbanger in question, the team works to reinvestigate the case. Meanwhile, Ruzek comes back after finishing his undercover assignment only to have Voight knock him down to patrol duty.

The episode was rated 7.83 from 1682 votes.

A live video is streamed online showcasing a tortured man being beaten and burned alive. Upon further investigation, the victim's identity is traced back to that of a man who had been previously locked up for statutory rape. When another attack of a similar nature occurs, Intelligence finds a connection between the crimes, suspected pedophiles, and group named the Perv Hunters.

The episode was rated 7.84 from 1623 votes.

When the team is called to an in-progress bank robbery, they come across Detective Hailey Upton trying to take over the crime scene with her Robbery-Homicide unit - butting heads with Voight in the process. As the robberies continue to be executed around the city, Lindsay is forced to make a decision in the heat of the moment.

The episode was rated 7.85 from 1701 votes.

When Chicago's "Night Crawler" Bobby Trent is murdered over a single piece of mysterious footage, Intelligence must investigate one of Chicago's wealthiest families. Meanwhile, Burgess's sister Nicole arrives at the District for a visit, and presents an icy attitude towards Ruzek.

The episode was rated 7.85 from 1663 votes.

Platt is sent to the hospital after a vicious attack outside her father's house. Mouch is questioned and past threats against her are revisited while the team investigates. A gruesome discovery inside the father's home ups the ante in the case.

The episode was rated 7.86 from 1609 votes.

After a female jogger is brutally murdered in the park, Rixton and Atwater arrive to see two suspects fleeing the scene. When the men make their way inside a church, the priest and parishioners gather outside to block law enforcement from entering. While investigating the case, Rixton gets caught in a lie with Voight.

The episode was rated 7.86 from 1411 votes.

While investigating the murder of a teenage boy, Voight finds a connection with the murder weapon - linking it to a case that he worked on 17 years ago. While the victim's father, a prominent defense attorney, tries to get the case taken over by Area Central Homicide, Voight digs back into the old case under the watchful eye of his former partner, Lieutenant Denny Woods.

The episode was rated 7.90 from 1688 votes.

Voight calls the team to investigate a homicide involving the only witness in a rape and murder case against an extremely young man, Oliver Tuxhor. Intelligence looks into Tuxhorn's family and their finances as they try to determine if someone was paid to take out the victim. Meanwhile, Stone offers Antonio a job as lead investigator for the state attorney's office, and Burgess and Sorensen's body cameras capture a bizarre exchange with a man that they pull over.

The episode was rated 7.90 from 1468 votes.

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.

The episode was rated 7.91 from 1635 votes.

After encouraging her sister to spend a night out with friends, Burgess wakes to find that Nicole never made it home. As the guilt begins to eat at Burgess, the team in Intelligence bands together to make finding Nicole their main priority.

The episode was rated 7.92 from 1696 votes.

Severide is brought into the District for questioning after his car is found to have caused a deadly crash. As the investigation gets underway, the team works to uncover a group of car-jackers who may be the key to Severide's innocence. The crossover starts on Chicago Fire S05E09 Some Make It, Some Don't (I).

The episode was rated 7.94 from 1675 votes.

The team investigates a murder in which the victim appears to have been wearing a CPD-issued wire. Burgess works a case with a new partner. Crowley questions Lindsay about the night that Intelligence pursued Justin's killer.

The episode was rated 7.94 from 1609 votes.

When Lindsay receives a panicked call from her mother Bunny whose boyfriend had just been shot, Lindsay must figure out the best way to approach the situation, as her mother is now a murder suspect. The case opens up when a group of high school students OD, and the drugs in question relate back to the situation with Bunny. In addition to her mother's issues, Lindsay finds herself up against the review board dealing with consequences of her actions.

The episode was rated 7.96 from 1675 votes.

In the intense episode of Chicago P.D. titled "A Shot Heard Round the World," the Intelligence team is faced with a devastating loss when a young officer is shot dead in the lobby of an apartment building. As they begin their investigation, they quickly focus their attention on the latest known offenders who have threatened the police. However, their search takes a shocking turn when a second officer is killed, revealing that they are dealing with someone who is highly trained and knowledgeable. The team must now navigate a dangerous and complex case that will test their skills and determination.

Fans of the show were left reeling by the departure of Antonio, a beloved character on Chicago P.D. However, they found solace in the fact that he would be joining the justice department, providing a familiar face in a new setting. Despite the bittersweet goodbye, viewers expressed their excitement for the upcoming Chicago Justice series, which would feature Antonio's character. This episode was particularly emotional for fans, and many admitted to shedding a tear as they watched Antonio bid farewell.

Although this episode marked Antonio's departure, fans were left wondering about the timeline of events. As it turns out, Chicago Justice would not begin for another four months, leaving a significant gap in Antonio's storyline. Some fans expressed concern about his absence during this time, eagerly anticipating his return in the upcoming Justice series. Nevertheless, the gripping and intense nature of "A Shot Heard Round the World" left fans eagerly awaiting the next episodes and the continuation of the Chicago universe they have come to love.

The episode was rated 8.01 from 814 votes.

In the intense episode "Emotional Proximity (II)" of Chicago P.D., Olinsky's daughter fights for her life after a devastating fire. With tensions running high, Intelligence is more determined than ever to find the culprit. Voight takes charge of the case, knowing he has the support of Stone and his team, as well as the entire Firehouse 51, to uncover the truth behind the fire's origins.

While some viewers found this crossover episode to be a letdown, not as intricately woven into the other shows like the previous Chicago Fire episode, it still managed to captivate with its gripping storyline. And let's not forget the swoon-worthy Jay, who continues to steal hearts with his good looks.

Admittedly, it may have been predictable that Lexi would meet a tragic fate. Killing off a character who's important to another character, yet not crucial to the overall show, can sometimes feel like a cheap way to stir up emotional drama. But fear not, the drama doesn't end here! Chicago Justice is about to begin, though it may come at an extra cost for those who don't have it available on their streaming service. Ah, the struggles of being a dedicated fan.

The episode was rated 8.02 from 1892 votes.