9-1-1: Lone Star

Season 4

18 episodes 5 seasons

Owen, Tommy and the rest of the 126 are being called into action to a county fair when a ‘derecho,’ a series of fast-moving group of severe thunderstorms, hit Austin, causing hurricane and tornado-force winds, heavy rains, flash floods and a wide path of destruction. And just when they think it couldn’t get worse, an even more rare weather phenomenon, a ‘heat burst,’ causing temperatures to go up to 122 degrees Fahrenheit, hits the city.

Release Date

Premiered

9-1-1: Lone Star Season 4 released on January 24, 2023.

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Episodes

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S04E01 Aired January 24, 2023

The New Hotness

Captains Strand and Vega along with the members of the 126 are called into action to a county fair when a "Derecho," a series of fast-moving severe thunderstorms, hit Austin, causing hurricanic and tornadic-force winds, heavy rains, flash floods and a wide path of destruction. Owen's newfound passion for motorcycling puts him on a potentially dangerous path. Tommy has the potential for a romance when she meets an attractive single father. And as T.K. and Carlos prepare for their wedding, a secret from Carlos' past may stand in their way to happiness.

S04E02 Aired January 31, 2023

The New Hot Mess

Captain Strand and the 126 race to the rescue when a woman is trapped in her mobile house that has been hijacked by her ex. Owen has a run in with former nemesis Sgt. O’Brien and is then questioned by the FBI. Tommy asks Grace dating advice. T.K. and Carlos meet with Iris Blake.

S04E03 Aired February 07, 2023

Cry Wolf

As Owen gets pulled deeper into the FBI’s investigation of the motorcycle gang, Sgt. O’Brien makes a confession to him. Meanwhile, Grace and the 126 respond to a call from a man who claims his girlfriend slipped over the side of a cliff and Carlos searches for a missing friend, putting his own life in danger.

S04E04 Aired February 14, 2023

Abandoned

As Owen wears an FBI wire for his meeting with O’Brien, The Honor Dogs crash the meet-up and let them know there's an infiltrator in their midst. A frantic TK desperately searches for a missing and held captive Carlos.

S04E05 Aired February 21, 2023

Human Resources

Owen helps defend Marjan when a rescue complaint forces her to make a challenging ethical decision. Meanwhile, Grace befriends a young boy who becomes a frequent 9-1-1 caller, but when she discovers he may be in some real danger she must step in.

S04E06 Aired February 28, 2023

This is Not a Drill

Owen reveals to the 126 he has been working with the FBI to help bring down a domestic terrorist group with his motorcycle gang. The 126 respond to a bomb threat at the State Capitol and put a stop to the terrorist deadly plans.

S04E07 Aired March 07, 2023

Tommy Dearest

The 126 help a husband whose wife "dies" when she is not upside down. Grace takes a call from a pizza delivery driver who is in for the shock of his life. Tommy is worried Trevor's young daughter is a bad seed as she attempts to break them up. Paul is hesitant to go on a date with Asha, who knows him prior to his transition.

S04E08 Aired March 14, 2023

Control Freaks

The 126 must rescue a father/son involved in a drivers ed lesson gone haywire, then encounter a self-help guru who has lost his self-control. Meanwhile, Owen turns into a "Dadzilla" in helping plan T.K. and Carlos' wedding, and Marjan is suspicious when she meets a couple on her road trip.

S04E09 Aired March 21, 2023

Road Kill

On her way back to Austin, Marjan is in for the fight of her life when she is targeted by a killer.

S04E10 Aired March 28, 2023

Sellouts

Tommy goes paramedic crew-to-crew against her former employer, private contractors Paragon Medics, as they deal with emergencies involving a dialysis patient and at a perfume factory. Meanwhile, Owen hits it off with a beautiful woman he meets at a fundraiser.

S04E11 Aired April 04, 2023

Double Trouble

The 126 race to rescue a woman with an arrow shot into her head; Judd is doubly surprised by the news Wyatt shares; Mateo helps a family member in need and comes to regret it.

S04E12 Aired April 11, 2023

Swipe Left

When she discovers her former fiancé is having a baby with his new wife, The 126 help Marjan enter the dating world through a series of chaperoned dates; Owen and the team are called to the rescue when a pregnant woman takes matters (and her anger) out at a motel where she suspects her husband is cheating on her.

S04E13 Aired April 18, 2023

Open

Owen is shocked by a secret Kendra has been keeping from him; Grace confronts her father about his past infidelity.

S04E14 Aired April 25, 2023

Tongues Out

Owen enlists Paul's help in proving Kendra's innocence; Tommy deals with church gossipers over her relationship with Pastor Trevor.

S04E15 Aired May 02, 2023

Donors

Grace and Carlos work together when they suspect a young woman was a victim of a black market organ trafficking ring; Owen's brother Robert comes to visit and meet T.K., but surprises Owen with news that can affect the Strand family.

S04E16 Aired May 09, 2023

A House Divided

When Tommy and Judd disagree on protocol during a rescue at the paper mill, a full-on feud develops between the 126 EMS and Fire. Owen awaits news that could change his and T.K.’s lives forever.

S04E17 Aired May 16, 2023

Best of Men

Owen is conflicted when his brother Robert asks him for help. Judd and Grace face a family crisis.

S04E18 Aired May 16, 2023

In Sickness and in Health

As T.K. and Carlos prepare for their wedding day, tragedy strikes.