One Chicago Crossover Event - Chicago Med S05E15 - Chicago Fire S08E15 - Chicago PD S07E15

Chicago Med 5x15 "I Will Do No Harm" Season 5 Episode 15 Promo Trailer HD - Dr. Charles and Dr. Manning treat a patient who is fully invested in pretending to be someone other than himself.

Noah begins to doubt his abilities as a doctor.

Dr. Marcel and Dr. Choi are faced with a tough ethical decision.

Dr. Halstead puts his faith in an addict.

Chicago Fire 8x15 "Off The Grid" Season 8 Episode 15 Promo - In a two-show crossover event with “Chicago P.D.,” a series of teen opioid overdoses sees Severide partner with Sean Roman (Brian Geraghty), but begins to suspect there’s more to the story than his old friend is telling him.

Casey tries to be there for Brett as she considers her birth mother’s offer to meet.

Chicago PD 7x15 "Burden Of Truth" Season 7 Episode 15 Promo - Part 2 of Crossover with Chicago Fire; Intelligence searches for the dealer who caused multiple overdoses and is connected to Roman's missing sister.

The case becomes a homicide investigation when they find the dealer's dead body.

Guest star: Brian Geraghty.