Kaley Ronayne

The death of Judge Tommy Wells' daughter puts Intelligence on the track of a pill mill spreading into the suburbs of Chicago and to the doctor enabling it. Voight discovers who's been leaking information from the 21st.

When the first day of Kit's experimental Flight Go team programme sends Conrad out into the field, he builds a new relationship with a fellow doctor along for the ride; Devon works with Trevor on a patient with a mysterious fever.

Keller suffers an embarrassing medical problem while Divya treats Civil War re-enactors and Evan is roped into a secret project with Boris.

Conrad contemplates his future; Devon is presented with an amazing career opportunity out of state; Ian is faced with a devastating diagnosis; Kit and Bell celebrate their engagement; Padma receives some highly anticipated news.

Devon treats his first patient with a revolutionary medical fluid that doesn't go as planned; an overdosed John Doe is rushed to Chastain, leading Conrad straight into a much bigger scandal than he expected.

When things from Billie's past begin to come to light, the team struggles to find the best way to support her; with the nurse shortage in full swing, a simple cleaning job turns into a horrific disaster.