Seeking a way into the drug trade, Hailey enlists an old informant and friend, Cameron Barlow . Despite her warnings for him to stay away, Cameron becomes overzealous and is eventually identified by Darius.
The Intelligence Unit is tasked by Superintendent Jason Crawford with investigating a lethal new drug, , which is reportedly 100 times stronger than fentanyl, after a turf dispute leaves two teenagers dead.
Voight brings back Darius Walker , a recurring crime boss forced to work as a CI. Despite being under Voight's protection, Walker’s reliability is immediately questioned by the team.
The death of Cameron was cited by fans on IMDb as one of the most shaking and tragic moments of the season.
"Informant" was noted by reviewers for its emotional weight and the developing friction within the unit:
originally aired on November 6, 2019, on NBC. The episode is a heavy character study for Hailey Upton, centering on the high stakes and ethical grey areas inherent in police work involving confidential informants (CIs). Plot Synopsis
Chicago PD Season 7 Episode 7 Review: Informant - TV Fanatic