Kara Killmer

From drinks at Molly's to hectic mayday calls, the friendships forged on Chicago Fire are the soul of the show.

While many One Chicago sweethearts are thriving, these ill-fated relationships have plagued Chi-Hards.

Chicago Fire fans remember the proposal scene between Brett (Kara Killmer) and Casey (Jesse Spencer) well. But do they remember the ring? 

The Chicago Fire star covers the sunny slice of pop perfection.

Chicago Fire alum Kara Killmer has some serious vocal chops. 

Find out what your favorite actors look like with (and without) their fire-safe apparel.

NBC Insider spoke with co-executive producer Demetra Diamantopoulos to get the scoop on filming locations.

"There is such a core principle of humor and friendship that continues to keep [us] going," Killmer told NBC Insider. 

Find out when new episodes of Chicago Fire return. 

Fire friends forever!

This is how they make that Brettsey magic happen on Chicago Fire.

The always-optimistic and empathetic Brett left Chicago Fire in 2024— but it's for a pretty great reason. 

Firehouse 51's sweetheart tied the knot and launched a new chapter in her life outside Chicago.

Grab the tissues and revisit some of "Brettsey's" cutest moments as a couple on Chicago Fire. 

Mayo and the rest of the Chicago Fire cast bid Killmer farewell after her last-ever episode of the series.

After 5 seasons of One Chicago bliss, the paramedic and the firefighter are finally husband and wife.

"It is just so satisfying to get to see them finally make that commitment to each other," Killmer told NBC Insider.

Only a couple like Brett and Casey could turn a fish supplies store into a romantic wedding venue.

Brett's character is stepping away from Firehouse 51 to focus on her family. 

Chi-Hards always love a Matt Casey guest appearance — and this time, we hear wedding bells!