Eric C. Lynch

Tennant's team, along with NCIS agents Nick Torres and Jessica Knight, tracks The Raven's whereabouts to the island of Oahu and learns about his plans to attack the world's largest international maritime warfare exercise.

Dr. Manning and Dr. Rhodes suspect that two separate cases involving sick babies may be connected; a homeless patient's upbeat disposition enlightens Dr. Halstead and Dr. Charles; Dr. Choi and a Navy corpsman deal with the toll of gang violence.

When the only witness to the rape and murder of a young man gets killed, the team suspects that someone was paid to take the victim out; Antonio receives a job offer from the state attorney's office.

Atwater and Burgess must keep their new patrol car in mint condition; the Intelligence Unit uncovers drug smuggling; Voight's behavior toward Lindsay drives her right where he doesn't want her; tensions rise between Olinsky and Ruzek.

Severide tries to prove his suspicions about the arsonist's identity; Casey gets accustomed to his new lifestyle; Dawson goes on a date with a regular from the bar.