Chicago Fire Season 13, Episode 19 Remembers 2025 One Chicago Crossover’s Underrated Pairing

The One Chicago universe established a great duo during the 2025 crossover, and Chicago Fire continues their story in season 13, episode 19, “Permanent Damage.” Over the years, the One Chicago TV shows have brought together numerous characters who rarely interact. Most recently, the 2025 crossover, “In the Trenches,” featured many unsuspecting but great pairings who all worked together to save victims (including two of their own) trapped underground in a subway tunnel thanks to a gas explosion.

Stella Kidd from Chicago Fire and Adam Ruzek from Chicago PD were the two characters trapped underground during the 2025 One Chicago crossover. They certainly had the upper hand because they shared so many scenes together, but Kidd and Ruzek were undoubtedly the three-part event’s best duo. As a result, it’s exciting to see them (sort of) connect again in Chicago Fire season 13, episode 19.

Severide Calls Ruzek For Police Help In Chicago Fire Season 13, Episode 19

Severide Investigates An Old Fire

Even though Kidd doesn’t appear in Chicago Fire season 13, episode 19, the hour still acknowledges her previously established connection to Ruzek via her proxy to Severide. In “Permanent Damage,” a young teenager named Natalie approaches Severide at Firehouse 51 looking for Kidd. Since she is at a training course in Maryland, Natalie turns to Taylor Kinney’s character for help. Natalie’s family lost their home to a fire many years ago, but she is just now coming forward to share her belief that her sister started it. So, Severide starts investigating, and the first thing he does is call Ruzek.