Special Guest Stars Taylor Kinney as Lieutenant Kelly Severide Christian Stolte as Lieutenant Randy "Mouch" McHolland Oliver Platt as Dr. Daniel Charles S. Epatha Merkerson as Chief Administrator Sharon Goodwin Miranda Rae Mayo as Firefighter Stella Kidd Luke Mitchell as Dr. Mitch Ripley Dermot Mulroney as Battalion Chief Dom Pascal Darren Barnet as Dr. John Frost Sarah Ramos as Dr. Caitlin Lenox Steven Weber as Dr. Dean Archer David Eigenberg as Captain Christopher Herrmann Guest Stars Jason Kelley as Cory Antonella Rose as Ellie Simshaw Nate Corddry as Thomas Milken Ian Foreman as Jacob Danny Fischer as Duffy Chloe Jo Rountree as Becca Nick Fondulis as David Mossberg Erik Odom as Marcus Jennifer Regan as Lauren Bates Co Starring Charles Stransky as Cy Nathan Reid as Justin Simshaw Raquel Davies as Esme Justin Mane as Ray Gorman Catherine Collier as Suited Woman (AKA Meg) Aila Peck as Jane Doe / Margaret Simshaw Colin Sphar as Scott Erica Lynn Castillo as Paramedic
