Season Four

Season Four is the fourth season of 9-1-1. It was first announced on April 13, 2020.^[1]

The season premiered on January 18, 2021 with "The New Abnormal" and concluded on May 24, 2021 with "Survivors".

Production of Season 4 began on October 5, 2020 ^[2] and concluded on May 16, 2021. ^[3]

Synopsis[]

After a devastating 7.1 earthquake and coastal tsunami wreaked havoc in the city, what could possibly be next? Meanwhile, among the chaos, Athena is determined to put her physical and emotional injuries behind her and jump back into the job, as Maddie and Chimney prepare for the birth of their baby, and Buck delves into his past to help deal with his present. ^[4]

Confirmed Storylines[]

The storyline of Maddie and Chimney's relationship continuing, and the steps they go through during her pregnancy.^[5]
A secret that Maddie has been keeping about her and Buck's childhood will lead into "Buck Begins".^[6]
A "new phase" for Buck, on moving on from Abby after the events of "What's Next?".^[7]
More on Bobby and Athena's marriage and something that will lead him to questioning how much she needs him, leading to a strain in their relationship.^[8]

Cast[]

Starring[]

Angela Bassett as Athena Grant (14/14)
Peter Krause as Bobby Nash (14/14)
Jennifer Love Hewitt as Maddie Buckley (13/14)
Oliver Stark as Evan Buckley (14/14)
Aisha Hinds as Henrietta Wilson (14/14)
Kenneth Choi as Howard Han (14/14)
Ryan Guzman as Edmundo Diaz (14/14)
Rockmond Dunbar as Michael Grant (9/14)
Corinne Massiah as May Grant (12/14)
Marcanthonee Jon Reis as Harry Grant (8/14)
Gavin McHugh as Christopher Diaz (7/14)
John Harlan Kim as Albert Han (8/14)

Guest Starring[]

Episodes[]

No.	Title	Directed by	Written by	Airdate	Viewers (million)
1	"The New Abnormal"	David Grossman	Juan Carlos Coto	January 18, 2021	7.19^[9]
		When the Hollywood Reservoir dam breaks, Bobby and the 118 race into action to save passengers on a city bus that has crashed into a building several stories in the air. Maddie must first locate, and then rescue, a trapped cyclist, and Athena helps an agoraphobic woman evacuate her home.
2	"Alone Together"	David Grossman	Lyndsey Beaulieu	January 25, 2021	7.21^[10]
		In the aftermath of the dam break, massive mudslides wreak havoc throughout Los Angeles. As Athena fights to save herself and an agoraphobic woman after her house collapses, Bobby, Hen and Eddie rush to save hikers endangered by the falling of the Hollywood sign. Meanwhile, Buck and Chimney must rescue a group of pregnant women trapped in a submerged house.
3	"Future Tense"	Marita Grabiak	Andrew Meyers	February 1, 2021	6.77^[11]
		The 118 race to save a man under siege by his high-tech smart home, and a yoga teacher who has lost her vision. Athena hunts down a bank robber disguised by Covid protocols. Meanwhile, Buck confides in Maddie, Hen clashes with her antagonizing medical school lab partner and members of the 118's crew prep for an out-of-state mission.
4	"9-1-1, What's Your Grievance?"	Brenna Malloy	Nadia Abass-Madden	February 8, 2021	6.86^[12]
		Athena investigates a mysterious murder during a neighborhood block party and the 118 rush to save lives endangered by a bomb threat. Meanwhile, Chimney has a hard time keeping secrets when Maddie and Buck's parents come to town.
5	"Buck Begins"	Jann Turner	Juan Carlos Coto	February 15, 2021	6.84^[13]
		The 118 race to save the lives of workers trapped in a five-alarm factory fire. Meanwhile, Maddie reveals a painful family secret that causes Buck to confront his childhood and answer why he is the daredevil he is today.
6	"Jinx"	Jann Turner	Taylor Wong	February 22, 2021	6.73^[14]
		The 118 believes their fabled firehouse superstition has come true when they have the day from hell with a never-ending series of bizarre emergency calls - Athena is in hot pursuit of a 118 firetruck; a man who duct-taped himself to freeway billboard, a garage full of fireworks and a restaurant manager destroying his own business. Meanwhile, Eddie feels a spark with Christopher's former teacher, but admits to Bobby he may not be ready to move on in his personal life just yet.
7	"There Goes the Neighborhood"	Sharat Raju	Stacey Rose	March 1, 2021	6.40^[15]
		The 118 rush to save a man pinned under a Humvee, and a garage band that rocks out too hard. Enlisting Bobby and Athena's help, Michael installs a new "rear window," and turns into an amateur detective after noticing strange behavior at a nearby apartment. Meanwhile, Hen's mother unexpectedly arrives and announces she is moving to LA, and Buck's re-entry into the dating pool ends in disaster.
8	"Breaking Point"	David Grossman	Bob Goodman	March 8, 2021	6.27^[16]
		The 118 are called to the tarmac when a flight attendant reaches her limit with her flight's passengers. Athena discovers that quarantine has pushed a couple to their breaking point. Meanwhile, Eddie worries Christopher will not accept him dating, Buck reconnects with an old flame and finds himself in the middle of Albert's new relationship and Maddie and Chimney make a big decision about their baby.
9	"Blindsided"	Marcus Stokes	Andrew Meyers	April 19, 2021	6.24^[17]
		Athena and the 118 race to save lives after a drunk driver causes a deadly pile-up going the wrong way on the freeway and are shocked to discover who one of the injured is. Meanwhile, Maddie is determined to finish her shift before going into labor; and Hen and Karen are heartbroken as Nia prepares to be reunited with her birth mother.
10	"Parenthood"	David Grossman	Lyndsey Beaulieu	April 26, 2021	5.96^[18]
		The 118 responds to a series of calls dealing with parents and their children, including a disastrous birthday party thrown by a mommy blogger. Meanwhile, Athena and Michael talk to May about her past suicide attempt, Chimney and Maddie adjust to life with their newborn, and Hen and Karen are emotionally shattered as their foster daughter, Nia, is reunited with her birth mother.
11	"First Responders"	Tasha Smith	Kristen Reidel & Nadia Abass-Madden	May 3, 2021	6.12^[19]
		The members of the 118 rush to the site of a hit-and-run that leaves a familiar face in critical condition. Meanwhile, with Buck's help, Athena investigates the case of a missing woman last seen in a casino and Josh recalls an emergency in 2006 that led him to become a 9-1-1 operator.
12	"Treasure Hunt"	David Grossman	Bob Goodman	May 10, 2021	5.83^[20]
		When a famous mystery writer dies, Athena, Bobby and the 118 respond to the chaos caused by a city-wide manhunt for buried treasure the author left behind.
13	"Suspicion"	Brenna Malloy	Lyndsey Beaulieu & Andrew Meyers	May 17, 2021	5.93^[21]
		The members of the 118 make calls to save a bridezilla at a disastrous wedding and to a mother trapped on her balcony. Meanwhile, Hen plays medical detective when her mother, Toni, falls ill. Also, Eddie and Christopher receive a visit from Carla, Athena uncovers a secret Bobby has been hiding that puts their marriage on the rocks and Maddie struggles with adjusting to motherhood.
14	"Survivors"	Robert M. Williams Jr.	Kristen Reidel	May 24, 2021	6.35^[22]
		In the aftermath of the shooting, Athena and the 118 are on high alert when a sniper is targeting members of the LAFD. Meanwhile, Maddie makes a life decision.

Trivia[]

Below are the changes made to the main cast this season:
- John Harlan Kim (Albert Han) is upgraded to a series regular starting with "The New Abnormal" after previous recurring appearances in the third season.
Cheryl Dorsey, a Black woman who is a former LAPD field sergeant, was hired as a consultant for the writers’ room this season as Tim Minear wanted to find a way to directly explore the topics of of the Black Lives Matter protests in the wake of the killings of George Floyd and Breonna Taylor. ^[23]
On May 23, 2020, Tim Minear confirmed that a Buck Begins episode was planned for Season Four. This episode will be focused around Evan Buckley's backstory. ^[24]
- On November 15, 2020, Oliver Stark revealed the official script for the officially titled episode, "Buck Begins" on Twitter, written by Juan Carlos Coto. ^[25]
On August 27, 2020, it was announced that John Harlan Kim would become a series regular in Season Four. ^[26]
On November 22, 2020, Oliver Stark and Ronen Rubinstein posted a promotional image for a crossover episode with its spinoff series. ^[27]
On January 4, 2021, Ronen Rubinstein confirmed the crossover episode will be released on February 1, 2021.