Home Photos Chicago PD Chicago PD 9×04 “In the Dark” Photos CHICAGO P.D. -- "In The Dark" Episode 904 -- Pictured: Tracy Spiridakos as Hailey -- (Photo by: Lori Allen/NBC) PhotosChicago PD Chicago PD 9×04 “In the Dark” Photos By The TVPulse Team - October 7, 2021 FacebookTwitter When Upton and Ruzek answer an emergency call to an abandoned house, their investigation leads them down a dark path. Air Date: Wednesday, Oct. 13 (10:00PM – 11:00PM) on NBC. NUP_195128_0113.JPG ◄ Back Next ► Picture 3 of 17 CHICAGO P.D. -- "In The Dark" Episode 904 -- Pictured: Tracy Spiridakos as Hailey -- (Photo by: Lori Allen/NBC) RELATED ARTICLESMORE FROM AUTHOR Chicago PD Photos: Episode 11×09 “Somos Uno” Chicago PD Photos: Episode 4×08 “Sins of Our Father” NBC Renews Dick Wolf-Produced Series including the “Chicago” & “Law and Order” Franchises For 2024/25 Chicago PD Photos: Episode 11×08 “On Paper” Chicago PD Photos: Episode 11×07 “The Living and the Dead”