Chicago Fire season 7, episode 21 recap: The White Whale

CHICAGO FIRE -- "The White Whale" Episode 721 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Jesse Spencer as Matthew Casey -- (Photo by: Elizabeth Morris)
CHICAGO FIRE -- "The White Whale" Episode 721 -- Pictured: (l-r) Kara Killmer as Sylvie Brett, Jesse Spencer as Matthew Casey -- (Photo by: Elizabeth Morris) /
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Chicago Fire continued to chase an arsonist and new romance in The White Whale. Find out what happened in our Chicago Fire season 7, episode 21 recap.

This week’s Chicago Fire continued the storylines set up in last week’s episode, preparing One Chicago fans for another of the show’s crazy finales.

Wednesday’s episode “The White Whale” continued Kelly Severide’s (Taylor Kinney) hunt for the arsonist who had eluded his father, allowing him to identify the person and come much closer to them than he probably ever expected.

Meanwhile, Ritter (recurring guest star Daniel Kyri) got his biggest storyline yet, as Chicago Fire told a story about a retiring firefighter whose departure from the Chicago Fire Department was hiding a much darker truth.

Click through this slideshow to find out what happened in the latest Chicago Fire episode for each of your favorite characters, starting with:

Chicago Fire
CHICAGO FIRE — “The White Whale” Episode 721 — Pictured: Jesse Spencer as Matthew Casey — (Photo by: Elizabeth Morris) /

Sparks, literally and metaphorically

Severide presented the evidence he’d found at his father’s cabin to Matthew Casey (Jesse Spencer) and Chief Wallace Boden (Eamonn Walker), sure that the person his dad had been chasing was also responsible for the salon fire they were still investigating. They were understanding, but Boden told Severide to messenger the material over to the Office of Fire Investigation and let them handle the case going forward.

Meanwhile, a fireman from Firehouse 77 named Russ LaPointe was retiring, and Russ seemed to be beloved by everyone but Mouch (Christian Stolte). Mouch’s grudge semeed to stem from getting his behind kicked in a hose-roll competition while then-girlfriend Trudy Platt (an unseen Amy Morton) was watching.

Sylvie Brett (Kara Killmer) developed an awkward cough when she saw Casey walk into the bunk room, and told Emily Foster and Stella Kidd (Annie Ilonzeh and Miranda Rae Mayo) what her friend had said about her and Casey being meant for each other. But Stella seemed to agree, and when Foster asked how Brett felt about him, she only managed, “I don’t know.” Well, everyone else does, including Chicago Fire fans.

The first call of the week was an idiot who’d been playing with fireworks and was now missing a few fingers. That’s why you don’t play with fireworks, kids. The best part is that despite the maiming, some of the guy’s idiot friends were still shooting off fireworks—and one of them hit Casey in the neck. Brett came to the rescue, complete with semi-romantic underscore.