(X) "RETALIATION HIT"
05/01/2013 (10:00PM - 11:00PM) (Wednesday) : SERVERIDE IS MET WITH UNEXPECTED NEWS, AS VOIGHT RETURNS - TREAT WILLIAMS GUEST STARS - Detective Voight (guest star Jason Beghe) returns, looking to collect on the favor that Dawson (Monica Raymund) owes him for helping her brother, Antonio (guest star Jon Seda). Casey (Jesse Spencer) falls back into old patterns in his personal life, while Dawson, Herrmann (David Eigenberg) and Otis (Yuri Sadarov) become the proud owners of a real neighborhood bar as Molly's prepares for its grand opening. Meanwhile, Severide's (Taylor Kinney) career is threatened. Lauren German, Charlie Barnett and Eamonn Walker also star.