Kelly Severide continues to deal with the fallout of his demotion and ongoing friction with Captain Dallas Patterson.
While Benny successfully uncovers compromising information, Severide ultimately chooses not to use it against Patterson. This decision leads to an unexpected moment of bonding between the two men, setting the stage for Patterson's eventual redemption arc. House 51 Dynamics and the Gala [S4E7] Sharp Elbows
Severide’s father, Benny, returns and offers to help his son by digging up "dirt" on Patterson. Kelly Severide continues to deal with the fallout
Gabby Dawson stands up to Captain Patterson in defense of Boden. When the confrontation escalates, Matt Casey intervenes to remind Patterson that Dawson is not his "candidate" to bully. House 51 Dynamics and the Gala Severide’s father,
Serena makes serious accusations against Boden, including home invasion, which carries a potential 30-year sentence .
Sergeant Hank Voight makes a timely appearance to assist Boden, much to the annoyance of Deputy District Chief Ray Riddle, who has been pressuring Boden to resign. Severide’s Struggle and Redemption