Severide and Casey try to find the best fit for Kidd. Ritter, Gallo and Violet help plan an event for Mouch.

Boaz makes moves to dismantle the Mendoza Cartel once and for all.

After a shocking reunion with a dear friend, June contemplates the possibility of freedom, and confronts the unfulfilled promises she’s made to herself and to Luke.

Take a Deeper Look Inside Season 4 Episode 6 "Vows"

Is June Free? This episode changes everything. Or does it? Superfan Whitney Cummings and Ann Dowd wonder: is June really free?

Jimmy reads his favorite tweets with the hashtag #MisheardLyrics, then Jimmy chats with Blake Shelton and Fran Lebowitz before welcoming musical guests Regard, Troye Sivan and Tate McRae.