9-1-1 Season 10 is set to return on Thursday, October 15, 2026, at 8 p.m. ET on ABC, marking a major milestone for the first-responder drama. The new season arrives with a wave of changes—a new captain, a new detective, a new father, and a devastating volcano erupting in the heart of Los Angeles. Before the premiere, here is a complete breakdown of who is returning, who is stepping into new roles, and where every major character stands heading into the milestone season.
The Returning Main Cast and Their New Roles
Angela Bassett returns as Athena Grant, but this season she is officially an LAPD detective. After being shot in the Season 9 finale, Athena decided to leave her position as a field sergeant and step into a full-time detective role. Bassett shared her excitement about the change at the Disney 2026 Upfronts. “I’m excited to explore her transition to a full-time detective role,” Bassett said in an interview with People. “It’s a new chapter for her.” The premiere puts Athena directly in harm’s way when she becomes trapped underground during the sinkhole emergency that triggers the volcano.
Kenneth Choi returns as Howard “Chimney” Han, and this season he is the full-time captain of Station 118. Chimney officially inherited the title in Season 9 after serving as interim captain and dealing with his survivor’s guilt. He is now leading the firehouse through its first season without Bobby Nash. Season 10 will test his leadership as the team faces an unprecedented volcanic disaster.
Oliver Stark returns as Evan “Buck” Buckley, and his life has changed completely. In the Season 9 finale, Buck signed the papers to become the legal guardian of Theo, his biological son and the child of his late friends Connor and Kameron. Buck is now navigating the foster care system and fatherhood. Stark spoke about what lies ahead for his character. “The foster system and the difficulties and will we have to fight for him or why is nobody else fostering him, where is his extended family?” Stark told TV Insider.
Aisha Hinds returns as Henrietta “Hen” Wilson. After a difficult Season 9 that included a health scare and a sabbatical from work, Hen is back at the 118. She will pull double duty in the premiere, helping with the volcano rescue while also searching for her best friend Athena, who goes missing during the disaster.
Ryan Guzman returns as Edmundo “Eddie” Díaz. Eddie is still recovering from being stabbed by Anatoly Caster in the Season 9 finale. A scene from the trailer shows Eddie rescuing a dog while the floor turns into lava. Guzman has said that despite the injury, Eddie will bounce back. “In true ‘9-1-1’ fashion, Eddie will heal up in a matter of 30 seconds, and we’ll forget all about it,” Guzman told TVLine. Eddie will also be a key source of support for Buck as he adjusts to raising Theo.
Jennifer Love Hewitt returns as Maddie Buckley. As a 9-1-1 dispatcher, Maddie faces an impossible situation when the volcano erupts. The city has no established protocol for a volcanic eruption, and Maddie and her team must rely on their experience to handle the emergency. Hewitt has also revealed a new look for Maddie this season, with blonde hair.
The Supporting Cast and Their New Chapters
Corinne Massiah returns as May Grant, and she is embarking on a new career in nursing. Showrunner Tim Minear confirmed that May will be thrown into the deep end immediately. “Her new career as a nurse would see her being thrown into the deep end as soon as we see her,” Minear told TVLine. May is also still in a relationship with Ravi Panikkar, and the two are going strong. May’s journey brings her closer to the rest of the team, as she may cross paths with the 118 more often when they bring patients to the hospital.
Elijah M. Cooper returns as Harry Grant, who is now entering his second season as a firefighter. Harry completed his training in Season 9 and officially became a firefighter, following in the footsteps of his late stepfather Bobby Nash. Minear confirmed that Harry’s journey continues this season. “Harry’s a firefighter now,” Minear said. “It’s the same show.”
Anirudh Pisharody returns as Ravi Panikkar, a fan-favorite firefighter who has become an increasingly vital member of the 118. Ravi is still dating May, and the two are navigating their relationship while both working in high-stress environments. He also plays a key role in the 118’s rescue operations during the volcano arc.
Gavin McHugh returns as Christopher Díaz, Eddie’s son. Christopher has grown up significantly, and Season 10 will show him navigating life as a teenager. In a Season 9 episode, Christopher asked Eddie to bring his Silver Star to show-and-tell, highlighting the close bond between father and son. Christopher continues to be an important part of Eddie’s story.
Tracie Thoms returns as Karen Wilson, Hen’s wife. Karen has been a recurring presence throughout the series and continues to support Hen as she returns to work following her health struggles.
New Faces and Guest Stars
Season 10 also brings some new additions to the cast. Bryan Safi returns as Josh Russo, a dispatcher who works alongside Maddie. Tre McBride returns as Ian Bradley, a nurse connected to May’s storyline. Minear confirmed that Ian will be back this season. Kelvin Han Yee appears as John Lee. Ryan Phillippe joins as Detective Rogue Kelly in the 9-1-1: Nashville crossover.
The season will feature a “mini crossover” with 9-1-1: Nashville during the volcano arc, bringing characters from both shows together for a shared emergency.
The Volcano Disaster That Starts It All
Showrunner Tim Minear has revealed that Season 10 opens with a massive sinkhole in Los Angeles that quickly escalates into a volcanic eruption. The team drew inspiration from the 1997 disaster film Volcano, but Minear made it clear that the catastrophe will have its own identity. “It opens with a giant sinkhole,” Minear told TVLine. “And while we were prepping that, a giant sinkhole opened up on Sunset Boulevard.”
The eruption traps Athena underground, forcing the 118 to band together for a rescue mission unlike anything they have faced before. The official synopsis for the premiere reads: “The 118 faces an earth-shattering emergency that shakes the city of Los Angeles to its core. Still finding her footing as a detective, Athena leans on instinct to crack a mysterious new case, while May finds her own confidence in a new job.”
A First-Time Scene Nine Years in the Making
For the first time in the show’s run, Jennifer Love Hewitt and Ryan Guzman will share a one-on-one scene in Season 10. Both actors joined the series in Season 2, but their characters Maddie and Eddie have never had a dedicated scene together. Hewitt celebrated the news by declaring, “Meddie is born,” on social media. The scene is expected to be a meaningful moment between two characters who have both been through significant personal struggles.
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Where and When to Watch 9-1-1 Season 10
ABC will air the premiere on Thursday, October 15, 2026, at 8 p.m. ET/PT, with 9-1-1: Nashville Season 2 following immediately after at 9 p.m. ET. New episodes will be available to stream on Hulu the day after they air in the United States.
For international audiences, release schedules vary:
- Canada: The season will be available on Disney+ starting October 16, 2026.
- UK and Ireland: The season is expected to arrive on Disney+ in November 2026, though an exact date has not been officially confirmed. This follows the pattern of Season 9, which had a delayed release on the platform.
- Australia: The season will air on Seven and stream on Disney+. No exact premiere date has been announced for the region.
- India: Viewers can watch on JioHotstar and VI Movies & TV.
- Germany: A release on Disney+ is expected in early 2027, with no fixed date confirmed yet.
- Spain: Disney+ has all nine previous seasons available, and the new season is expected to arrive on the platform after the US broadcast.
- Brazil: The series airs on Disney+ in Brazil.
Fans in regions where the show airs on broadcast television should check their local listings for exact times. Streaming availability may vary by territory, and viewers are advised to check their local Disney+ or Hulu page for the most up-to-date information.
For more updates on the 9-1-1 universe and everything happening at Station 118, keep checking VvipTimes.
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