One Chicago & The FBIs Wiki
Season: 7
Episode: 4
Original airdate: October 16, 2019
Teleplay by: Gwen Sigan
Story by: Dick Wolf
Derek Haas
Directed by: Eriq La Salle
Episode chronology
Previous episode: Familia
Next episode: Brother's Keeper


After zeroing in on the suspect responsible for the bioterrorism that's gripping Chicago, the PD prepares to undertake their biggest manhunt yet. Upton is torn between helping track down the perp and providing emotional support to the scared young girl that needs her. Voight fears his team is being sent on a wild goose chase.


Main Cast

Special Guest Stars

Guest Stars


  • Anthony Ferraris as Squad 3 Driver Tony Ferraris
  • Jeremy Shouldis as Doctor Marty Peterson
  • Lorena Diaz as Nurse Doris
  • Amanda Marcheschi as Nurse Dina Garston
  • Ben Wilson as Officer Murphy
  • Julian Hester as John Sorenstein
  • Louise Lamson as Doctor Heather Holcomb
  • Javier Gutierrez as Driver
  • Brett Lee as Shipp
  • Paul Zinke as Jordan
  • Sheri L. Winkelmann as Woman
  • Christopher Ellis as FTO
  • Andrea Adams as Patrol Officer
  • Alejandro Raya as Patrol Officer
  • Ricky Bartlett as Security Guard #1
  • Grant Stokes as Board Member #1
  • Scot Morton as Board Member #3


Background information and Notes


Chicago P.D. Season 7
Episodes DoubtAssetsFamiliaInfection, Part IIIBrother's KeeperFalse PositiveInformantNo RegretsAbsolutionMercy43rd and NormalThe Devil You KnowI Was HereCenter MassBurden of TruthIntimate ViolenceBefore the FallLinesBuried SecretsSilence of the Night
Other Seasons Season 1Season 2Season 3Season 4Season 5Season 6Season 8Season 9Season 10