Matthew Casey

CHICAGO FIRE -- "Escape Route" Episode 908 -- Pictured: Jesse Spencer as Matthew Casey -- (Photo by: Adrian S. Burrows Sr./NBC)

Jesse Spencer's Chicago Fire exit and returns explained: Why he left and what brought him back

Is Brettsey's Chicago Fire wedding venue based on a real place?

Here's every Chicago Fire character who will be in the Brettsey wedding

Chicago Fire finally confirmed a long-speculated theory about Severide

CHICAGO FIRE -- "Port in the Storm" Episode 12006 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Jesse Spencer as Matt Casey -- (Photo by: Adrian S Burrows Sr/NBC)

Brett and Casey's wedding looks AMAZING in new Chicago Fire photos

CHICAGO FIRE -- "Funny What Things Remind Us" Episode 904 -- Pictured: Jesse Spencer as Matthew Casey -- (Photo by: Adrian S. Burrows Sr./NBC)

Chicago Fire provides first look at Casey's season 12 return (finally!)

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Alberto Rosende as Blake Gallo, Jake Lockett as Carver, Miranda Rae Mayo as Stella Kidd -- (Photo by: Adrian S Burrows Sr/NBC)

Chicago Fire star reveals secret to keeping the show ‘fresh’

CHICAGO FIRE -- "Danger Is All Around" Episode 1118 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Jesse Spencer as Matthew Casey -- (Photo by: Lori Allen/NBC)

3 One Chicago couples we’re rooting for (and 1 we hope breaks up)

CHICAGO FIRE -- "Danger Is All Around" Episode 1118 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Jesse Spencer as Matthew Casey -- (Photo by: Lori Allen/NBC)

This Chicago Fire plot hole has fans scratching their heads

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Christopher Allen as Dylan -- (Photo by: Adrian S Burrows Sr/NBC)

3 storylines that desperately need closure in Chicago Fire season 12

CHICAGO FIRE -- "Headlong Toward Disaster" Episode 315 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Kara Kilmer as Sylvie Brett -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire: Jesse Spencer picks surprising favorite episode

CHICAGO FIRE -- "Headlong Toward Disaster" Episode 315 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Kara Kilmer as Sylvie Brett -- (Photo by: Elizabeth Morris/NBC)

Jesse Spencer sees ‘potential’ in returning to Chicago Fire full-time

CHICAGO FIRE -- "Damage Control" Episode 1115 -- Pictured: (l-r) Miranda Rae Mayo as Stella Kidd, Christian Stolte as Randy “Mouch” McHolland -- (Photo by: Adrian S Burrows Sr/NBC)

The 3 best (and 3 worst) Chicago Fire characters

CHICAGO, IL - APRIL 10: Jesse Spencer and Taylor Kinney attend TV Guide Celebrates Cover Stars Taylor Kinney & Jesse Spencer at RockIt Ranch on April 10, 2017 in Chicago, Illinois. (Photo by Timothy Hiatt/Getty Images)

Will Severide and Casey reunite in Chicago Fire season 12?

CHICAGO FIRE -- "The Right Thing" Episode 1004 -- Pictured: Jesse Spencer as Matthew Casey -- (Photo by: Adrian S. Burrows Sr./NBC)

How old is Matt Casey on Chicago Fire?

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: Jesse Spencer as Matthew Casey -- (Photo by: Adrian S Burrows Sr/NBC)

What’s next for Casey in Chicago Fire season 12?

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: (l-r) Alberto Rosende as Blake Gallo, Jake Lockett as Carver, Miranda Rae Mayo as Stella Kidd -- (Photo by: Adrian S Burrows Sr/NBC)

Chicago Fire characters who probably won’t be back in season 12

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Christopher Allen as Dylan -- (Photo by: Adrian S Burrows Sr/NBC)

Chicago Fire star shares extra Brettsey footage on Instagram

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Miranda Rae Mayo as Stella Kidd, Alberto Rosende as Blake Gallo, Jake Lockett as Carver -- (Photo by: Adrian S Burrows Sr/NBC)

Is anyone confirmed to be leaving Chicago Fire? (2023 cast updates)

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Kara Killmer as Sylvie Brett -- (Photo by: Adrian S Burrows Sr/NBC)

Chicago Fire: Will Brett say no to Casey’s proposal?

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Kara Killmer as Sylvie Brett -- (Photo by: Adrian S Burrows Sr/NBC)

Chicago Fire spoilers: Did Brett say yes to Casey’s proposal?

CHICAGO FIRE -- "Danger Is All Around" Episode 1118 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Kara Killmer as Sylvie Brett -- (Photo by: George Burns Jr/NBC)

Is Casey coming back to Chicago Fire for good? (Spoilers)

CHICAGO FIRE -- "Danger Is All Around" Episode 1118 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Jesse Spencer as Matt Casey -- (Photo by: George Burns Jr/NBC)

3 Chicago Fire characters who left Chicago for other jobs

CHICAGO FIRE -- "Danger Is All Around" Episode 1118 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Kara Killmer as Sylvie Brett -- (Photo by: George Burns Jr/NBC)

Chicago Fire photos: First look at Casey in the season 11 finale!

CHICAGO FIRE -- "Danger Is All Around" Episode 1118 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Jesse Spencer as Matthew Casey -- (Photo by: Lori Allen/NBC)

Chicago Fire: S11 Finale trailer hints at Brettsey reunion

CHICAGO FIRE -- "The First Symptom" Episode 1117 -- Pictured: (l-r) Joe Minoso as Cruz, Chris McKenna as Bamford -- (Photo by: Adrian S Burrows Sr/NBC)

3 One Chicago characters who have adopted kids

CHICAGO, IL - APRIL 10: Jesse Spencer attends TV Guide Celebrates Cover Stars Taylor Kinney & Jesse Spencer at RockIt Ranch on April 10, 2017 in Chicago, Illinois. (Photo by Timothy Hiatt/Getty Images)

Chicago Fire: Does Jesse Spencer have an accent in real life?

CHICAGO, IL - OCTOBER 07: Chicago Fire's Eamonn Walker and Jesse Spencer during NBCs 5th Annual Chicago Press Day at Lagunitas Brewing Company on October 7, 2019 in Chicago, Illinois. (Photo by Barry Brecheisen/Getty Images)

Chicago Fire: Is Casey replacing Severide in season 11?