Christopher Innvar

After a CIA operative is captured by French intelligence, Elizabeth tries to get the operative released while keeping a U.S. - France state dinner on schedule; Russell attempts to get some big donors behind Dalton's campaign again.

Elizabeth wants a Bahraini diplomat prosecuted when he is caught holding a maid hostage; Henry's father visits.

Dawson faces repercussions after she hits a pedestrian with the ambulance en route to a call; Casey and Severide continue to investigate an arson case; Chief Boden must decide whether to attend an important event in New York.

Citing a need for improvement, Chief Anderson reassigns members of 51 to other firehouses, leaving the crew members to make the best of their respective new situations; Severide struggles with an important decision.

Alicia and Diane must constantly rethink their approach when an opposing lawyer keeps changing tactics. Meanwhile, Eli wins a victory in his efforts to protect Peter's image. Maura Tierney returns as Maddie Hayward.