第 4 季 共 18 集
播出时间：2023年1月25日
第 1 集 The New Hotness
播出时间：2023年1月25日
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 group of 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.
第 2 集 The New Hot Mess
播出时间：2023年2月1日
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.
第 3 集 Cry Wolf
播出时间：2023年2月8日
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.
第 4 集 Abandoned
播出时间：2023年2月15日
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.
第 5 集 Human Resources
播出时间：2023年2月22日
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.
第 6 集 This Is Not a Drill
播出时间：2023年3月1日
Capt. Strand reveals to the 126 he has been working with the FBI to help bring down a domestic terrorist group with his Austin motorcycle club/gang The Honor Dogs, then race Owen to respond to a bomb threat at the State Capitol and put a stop to the terrorist deadly plans.
第 7 集 Tommy Dearest
播出时间：2023年3月8日
Capt. Strand and 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.
第 8 集 Control Freaks
播出时间：2023年3月15日
The 126 must rescue a father/son involved in 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.
第 9 集 Road Kill
播出时间：2023年3月22日
On her way back to Austin, Marjan is in for the fight of her life when she is targeted by a killer.
第 10 集 Sellouts
播出时间：2023年3月29日
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.
第 11 集 Double Trouble
播出时间：2023年4月5日
The 126 race to rescue a woman with an arrow shot into her head; Judd is doubly surprised by news Wyatt shares; Mateo helps a family member in need and comes to regret it.
第 12 集 Swipe Left
播出时间：2023年4月12日
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.
第 13 集 Open
播出时间：2023年4月19日
Owen is shocked by a secret Kendra has been keeping from him; Grace confronts her father about his past infidelity.
第 14 集 Tongues Out
播出时间：2023年4月26日
Owen enlists Paul's help in proving Kendra's innocence; Tommy deals with church gossipers over her relationship with Pastor Trevor.
第 15 集 Donors
播出时间：2023年5月3日
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.
第 16 集 A House Divided
播出时间：2023年5月10日
When Tommy and Judd disagree on protocol during a rescue at 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.
第 17 集 Best of Men
播出时间：2023年5月17日
Owen is conflicted when his brother Robert (guest star Chad Lowe) asks him for help; Judd and Grace face a family crisis; As T.K. and Carlos prepare for their wedding day tragedy strikes.
第 18 集 In Sickness and in Health
播出时间：2023年5月17日
Owen is conflicted when his brother Robert (guest star Chad Lowe) asks him for help; Judd and Grace face a family crisis; As T.K. and Carlos prepare for their wedding day tragedy strikes.
