It's a race against time on Wednesday's episode of Chicago P.D., when Lindsay (Sophia Bush) and Halstead (Jesse Lee Soffer) investigate a massacre at a family home and discover that the only survivor is the youngest daughter, who's completely traumatized.

The girl is brought to Chicago Med in a state of shock, but that doesn't deter Lindsay from trying to speak with her, in hopes of identifying her family's killer. But, as seen in the exclusive clip above, Dr. Charles (Oliver Platt) has other ideas about how to deal with the patient.

Who will win out — and will whatever information the girl has allow the Chicago P.D. to crack the case? Check out a sneak peek above.

Chicago P.D. airs Wednesdays at 10/9c on NBC.