The Best Episodes Written By Roger Grant

Cat finds information in a surprising place -- her ancestor's journal -- that makes her think the only way to stop Gabe is to kill Vincent.

When truck and squad are summoned to the scene of a dangerous accident, Chief Boden makes a split-second decision that overrides Chief Anderson, the incident commander whose house was the first to respond to the call. Feeling his authority was undercut and his reputation damaged, Anderson uses his power to make things miserable for Boden and all of House 51 feels the repercussions.

Lt. Casey is unable to rescue a woman who becomes trapped inside her burning greystone, prompting him and Lt. Severide to butt heads over the husband's role in the tragedy. Herrmann is on a mission to catch a mystery tagger that keeps targeting their firehouse and Boden gets a surprise visitor. Meanwhile, Dawson and Brett respond to a 16-year-old boy who was injured during a romantic homecoming proposal.

When a black hat hacker dies after an extortion scheme gone wrong, the team learns he was involved with a website dedicated to infidelity. As the case develops, Kirsten discovers that the hacker was actually set up by someone with an extreme thirst for revenge. But when the killer turns their attention to the team's personal lives, the Stitchers find themselves in grave danger at every turn. Meanwhile, Cameron's recent brush with death gives him a new perspective on life, and Linus finally moves out of his parents' house and into a fully equipped smart house

While honeymooning, Cassie and Sam help a new friend reconcile with her brother. Grace attempts to speed up time after a break-up. Sparks fly between Abigail and Blairsville’s mayor. Martha freezes at her TV audition. Nick ghost hunts at Grey House with a friend, who’s looking for more than spirits.

Cassie’s being honored by her alma mater and visits with Grace, who’s considering enrolling. Grace bonds with her weekend host, while Cassie reconnects with her college friend. Needing a break from Donovan, Abigail joins. At Grey House, Sam tries to channel Cassie while helping his father-son guests communicate better.