How to watch Chicago Fire: Season 4 (2015) on Netflix Netherlands!

A firefighter loses his life in the line of duty, and Lt. Matthew Casey and Lt. Kelly Severide assign blame to each other in the tense aftermath.

Severide attempts to rescue a worker trapped in a collapsed building while coping with a serious shoulder injury and guilt over Andy Darden's death.

Casey must decide whether or not to turn in a CPD detective's son for DUI. Severide finally gets medical attention for his injured shoulder.

The decision to evacuate the scene of a fire leads to bad PR and tension within the department. Voight continues to make life difficult for Casey.

Casey's conflict with Voight escalates to another level. Meanwhile, an excruciating rescue leaves Severide seeking new ways to manage his pain.

The battle with Voight distracts Casey from his work, prompting a warning from Boden. Dawson gets a pleasant surprise at her disciplinary hearing.

A mandatory drug test causes concern for Severide. A gang shooting and a highway accident throw a wrench in Firehouse 51's Thanksgiving plans.

A traumatic discovery leaves Mills wondering if he can handle his job. Dawson confronts a child abuser. Canadian firefighters visit the station.

An injury forces Vargas to make a difficult decision. Boden reaches out to a teen suspected of setting several fires. Casey and Dawson get closer.

Casey's crew is accused of lifting a pricey necklace from a fire scene. Dawson invites Casey to a Christmas party. Shay is frustrated with Severide.

A serious accident leaves the firehouse reeling. Casey deals with family issues as well as a confession from Cruz.

Severide comes clean about his shoulder injury and ponders his future. Casey prepares for his mother's parole hearing.

A deadly fire rocks the station and prompts Chief Boden to take action. Severide makes a big announcement. Dawson and Shay face a dicey situation.

Old tensions resurface when Severide encounters a familiar face. Dawson shares her secret with Shay. The team deals with a flurry of heroin incidents.

Casey attempts to rebuild a relationship with his mother. Dawson dives into a gang investigation. Severide visits an important person from his past.

Cruz's behavior stirs up concern at the firehouse. Casey works through issues with his sister. The crew assists the bomb squad on a call.

Severide's father arrives and gets in a dustup with Chief Boden. Shay makes a big decision about her future. Mills helps a driver who caused a crash.

Benny Severide insists on returning to the firehouse. The team investigates a pair of diner fires. Mills seeks answers about his father's death.

Emotions run high after a rescue attempt at an apartment building. Local drug dealers threaten the safety of the neighborhood and the firehouse.

Mills catches heat from resentful co-workers. A new paramedic joins Shay and Dawson on the job. Shay comes to the aid of Cindy Herrmann.

Voight returns, hoping to cash in a favor from Dawson. The new owners of Molly's prepare for the grand opening.

Severide vows to fight the allegations against him. The squad races to the scene of a balcony collapse. A fire breaks out at a familiar address.

Casey is forced to team up with Voight's intelligence unit on an investigation. Shay's excitement continues to build. Molly's has its grand opening.

A fire at a local prison leads to a riot and a dangerous situation for the responders. Mills and Dawson face important personal decisions.

Severide becomes the target of an arsonist. Firehouse 51 accepts new rules and a larger crew in order to avoid closure.

While Severide works to track down the arsonist, Casey struggles to build a relationship with Heather Darden's sons.

Severide pushes for an investigation into a colleague, the bar faces more setbacks, and Mouch gets campaign help from a friend of Dawson's.

A routine call takes a shocking turn and leads to problems between Shay and Dawson. Severide tries a new strategy to catch the suspected arsonist.

Boden faces pressure to retire early, the firehouse punishes the mole, and Severide becomes suspicious of his father's motives.

Severide springs into action when he discovers a trapped child during his morning run. Boden makes a big sacrifice. Tensions boil over at the bar.

A chaotic scene unfolds when the team is called to the scene of a major train derailment. Severide confronts his father about a startling discovery.

Casey and Dawson try to make sense of their feelings for each other. Cruz and Shay each take a big step. Boden tries new tactics with McLeod.

As Casey and Dawson continue to get closer, Severide helps his sister celebrate a milestone. Shay drops out of sight, worrying her friends.

The entire Firehouse 51 crew and the community come together for a last-ditch effort to keep the station from being shut down for good.

Dawson faces challenges as she starts at the firefighter academy, where Severide is teaching. Shay's new partner gives her a chilly reception.

Casey tries convincing everyone that he's fully healthy. Shay contends with lawyers who want to ask her about a traumatic event.

A car accident causes a swath of the city to lose power on a frigid night, leading to chaos for the firefighters in the streets and at the station.

Severide turns to Chicago P.D. for help finding Katie. Shay meets two pro hockey players. Dawson prepares for a big physical test.

Dawson braces for her return to 51. A new candidate has trouble fitting in at the firehouse. Severide gets news about the kidnapper.

Severide is questioned in a criminal case. Herrmann considers getting an unusual anniversary gift for his wife. Jones's father calls in a request.

The entire firehouse is touched by a stranger's heroic sacrifice, but shocked by the aftermath. Severide helps a man he saved from an accident.

Dawson and Shay take a weekend trip together to relax. Jones fights to remain a part of the firehouse. Mouch seeks dating help.

The entire crew comes together to mourn a loss, but tensions threaten to drive some of them apart. Boden tries to reconnect with his ex.

Chicago Fire and Chicago P.D. team up to investigate a huge explosion at a charity run. This story concludes in the "Chicago P.D." episode "8:30 PM."

As the station welcomes a new squad member, Dawson prepares to retake the firefighters' exam. Shay copes with the appearance of an unexpected guest.

A fire at a boarding school shakes Severide. Dawson gets her next assignment. Boden's big day takes an unexpected turn.

In the apartment fire explosion's aftermath, Boden and Dawson struggle to cope. Casey tracks down Severide, who hesitates to come back to Firehouse 51.

Severide returns to the station but continues to grapple with his grief. Dawson receives several surprises. Mills digs deeper into his family history.

Herrmann, Mouch and Cruz move forward with Molly’s expansion. A truck collision could have Cruz facing criminal charges. Mills gets distressing news.

A subway shooting forces Severide to face his pain. Dawson has an eventful first day as a candidate. Brett receives a surprise visitor.

Casey discovers a secret about his sister’s marriage. Herrmann questions Dawson’s candidacy. Brett juggles a decision. Boden steps up for Cruz.

Brett gets personally invested in a mother’s predicament. Casey goes to lengths to take down his brother-in-law. Severide heads to Vegas alone.

Severide returns from Vegas with news that shocks the team. Newhouse’s dangerous undertakings concern Mills. A call leads to an alarming discovery.

Boden and his wife learn of possible risks for their unborn child. A helicopter crash has the entire team on deck.

Conflict at work strains Dawson and Casey's relationship. Severide comes to a painful realization. Mills faces a threat after a teen's accident.

Boden and his wife disagree over baby names. A house fire isn’t what it seems. As the Molly’s food truck has a setback, so do Casey and Dawson.

The team searches for Brett and Mills, who have been kidnapped. Meanwhile, Boden's newborn son suffers from complications. Dawson makes a call.

Severide and Dawson uncover unsettling evidence related to Shay’s death. A friend of the team is involved in an accident. Boden’s father has bad news.

Severide investigates the arsonist case further. Shay’s sister has an emotional visit to the firehouse. Boden tries to help his father, who resists.

On a brutally cold day, there's a shocking arrival at the firehouse. Mills and Brett are stranded while on a call. Boden's father throws a party.

Boden takes leave after a difficult goodbye. A new chief ruffles feathers. The team gets an unwelcome addition. Casey's alarmed by his new flame’s past.

Working to blame Casey for a bad call, Pridgen threatens Severide. Mouch debates whether to face his past. Brett nudges Dawson back into dating.

Mouch and Mills both seek second chances, while Severide helps a friend who wants to return to the station. Brett and Dawson have a night on the town.

Upsetting information emerges about the father of a child saved by Herrmann in a building fire. Brett and Otis navigate matters of the heart.

The aftermath of a fire worsens when an attack on the hospital seriously injures dozens, including Severide, and raises fears of an infectious disease.

Torn between work and family, Mills makes a shocking decision. Casey's new project brings doubts. Otis and Cruz broach a sensitive topic with Herrmann.

A new paramedic joins Brett. An apartment fire linked to rape and attempted murder sparks a joint investigation with the police department and SVU.

Otis and Rice's enmity aggravates Severide. A secret about the strip club leads Casey to take action. Herrmann helps Chili with a business idea.

Severide looks into Rice’s actions. Casey’s operation turns dangerous. The team must step up during a warehouse fire. Cruz and Dawson each receive news.