Danny Martinez

Lindsay calls on Voight and his unit for help with her first case on the federal task force.

Chief Boden (Eamonn Walker) confronts Maddox (guest star Mark Hengst), believing he is the hand behind Serena's (guest star Ilfenesh Hadera) accusations intended to skew Boden's credibility from the approaching trial. Severide (Taylor Kinney) reaches out to Jamie (guest star Rachel Nichols), Maddox's lawyer, in an effort to help out and Capt. Patterson.

The entire squad searches for the person who shot Detective Sanchez's brother; the case is jeopardized by an overzealous detective and a leak within the department.

The Connors are on high alert after their house is robbed; while one terminator terrorizes Ellison, another gets dangerously close to John; Jesse and Derek try to become reacquainted.