John Jay College of Criminal Justice as Booker University Medical Center
Dr. Richard Nelson is poisoned while accepting an award.
“In Extremis” Filming Locations
Reese teams up with a doctor who has been fatally poisoned to find his killer while internal affairs investigates Fusco for the murder of Detective Stills.
Person of Interest episode “In Extremis” was filmed in New York in the United States of America.
Mt. Olivet Cemetery as Mt. Olivet Cemetery
Carter and Fusco attend Cal Beecher's funeral where Quinn gives the eulogy.
Source: Person of Interest — Wikia
555 West 57th Street as Across from Dr. Nelson's Lab
Reese watches Dr. Nelson in his lab from the adjacent building.
West 68th Street (between Broadway & Columbus) as Outside Nightclub
Reese and Dr. Nelson kidnap Brandon Boyd as he leaves a nightclub.