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 Sarah Shahi Renée Royce Guest Star Joe Minoso Joe Cruz Guest Star Yuri Sardarov Brian Zvonecek Guest Star Christian Stolte Randall McHolland Guest Star Jeff Lima Leon Cruz Guest Star Nicole Forester Christie Guest Star Kathleen Quinlan Nancy Casey Guest Star Randy Flagler Capp Guest Star William Smillie Hadley Guest Star Robyn Coffin Cindy Herrmann Guest Star Jason Singer Lance Ebbott Guest Star Greg Mills Driver Guest Star Christine Tawfik ER Doctor Guest Star Sam Derence Doctor Guest Star Derek Haas Executive Producer Michael Brandt Executive Producer Jeffrey Nachmanoff Executive Producer Dick Wolf Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer Daniel Sackheim Director Andrea Newman Writer Marc Dube Writer