Carlos S. Sanchez

Javi spends a couple of shifts at Firehouse 51; Kidd and Carver work together to help Carver's former boss; as Hawkins and Violet's relationship blossoms, Gallo turns his attention elsewhere.

Severide and Kidd investigate an explosion at a jewelry store. Cruz and Chloe take steps to make Javi a permanent part of their family. Gallo, Ritter and Mouch try to bond with Carver.

The big wedding day arrives and Firehouse 51 welcomes Casey back to celebrate the joyous occasion. Emma’s plans to replace Violet come to a shocking end.

Severide struggles with the cost of helping Det. Pryma with the Martucci case. Gallo campaigns for Herrmann to represent 51 at the National Firefighter’s Association’s Winter Conference. A familiar face makes a shocking return.

Severide and Kidd work with CPD regarding a suspicious car wreck. Hawkins and Violet’s relationship is in jeopardy. Chloe and Cruz adjust to a new family dynamic.

Mouch builds a classic firetruck model for the Deputy District Chief, but quickly needs some assistance from Gallo and Ritter. Brett and Violet encounter multiple victims with a strange set of symptoms. The results of Cindy’s chemotherapy loom over the Herrmann family.