Is Casey capable of solving everything?
On Chicago Fire Season 4 Episode 19, he couldn't help but to get involved when a high school student is the victim of a gang-retribution incident.
Also this week, Severide helped out Detective Holloway by taking care of her nine-year-old son at the firehouse.
Meanwhile, Herrmann is forced to show how serious he is about running the bar when some new competition showed up on the scene.
Elsewhere, Brett and Jimmy were called to help a woman who took a liking to Jimmy.
Use the video above to watch Chicago Fire online to get up to speed.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.