Jesse Spencer Matthew Casey Actor Taylor Kinney Kelly Severide Actor Charlie Barnett Peter Mills Actor Monica Raymund Gabriela Dawson Actor Lauren German Leslie Shay Actor Eamonn Walker Chief Wallace Boden Actor David Eigenberg Christopher Herrmann Actor Teri Reeves Hallie Thomas Actor Mo Gallini Jose Vargas Guest Star Sarah Shahi Renée Royce Guest Star Joe Minoso Joe Cruz Guest Star Yuri Sardarov Brian Zvonecek Guest Star Christian Stolte Randall McHolland Guest Star Randy Flagler Capp Guest Star Shiri Appleby Clarice Guest Star William Smillie Hadley Guest Star Kathleen Quinlan Nancy Casey Guest Star Nicole Forester Christie Guest Star Jon Seda Antonio Dawson Guest Star Robyn Coffin Cindy Herrmann Guest Star Derek Haas Executive Producer, Writer Michael Brandt Executive Producer, Writer Jeffrey Nachmanoff Executive Producer Dick Wolf Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer Joe Chappelle Director Michael Slovis Director Alex Chapple Director Jean de Segonzac Director Tom DiCillo Director Arthur W. Forney Director Andrea Newman Writer Matt Olmstead Writer Michael Gilvary Writer Hilly Hicks Jr. Writer Marc Dube Writer Ryan Harris Writer