One Chicago & The FBIs Wiki
Unreasonable Doubt
Season: 3
Episode: 2
Original airdate: November 24, 2020
Written by: Tom Szentgyorgyi
Directed by: Jean de Segonzac
Episode chronology
Previous episode: Never Trust a Stranger
Next episode: Liar's Poker


The team races to stop an active serial killer after three women are found weighted down at the bottom of a lake, and Jubal looks into an old closed case after there are multiple similarities to the recent victims.


Main Cast

Guest Stars


  • Joshua Morgan as Peter Deleon
  • Pierre Jean Gonzalez as Ben Santos
  • Meredith Handerhan as Taryn McMay
  • Karen Christie Ward as Westchester PD Officer Collins
  • David North as Kenneth Higby
  • David Lee Huynh as Westchester PD Officer
  • Sam Poon as Teen #1
  • Aaron Samuel Vargas as Teen #2
  • Andrew Scott May as Sous Chef
  • Zakiya Cook as Angela


  • Dick Wolf as Creator
  • Craig Turk as Creator
  • Dick Wolf as Executive Producer
  • Rick Eid as Executive Producer
  • Alex Chapple as Executive Producer
  • Arthur W. Forney as Executive Producer
  • Peter Jankowski as Executive Producer
  • Joe Halpin as Co-Executive Producer
  • Tamara Jaron as Co-Executive Producer
  • Tom Szentgyorgi as Co-Executive Producer
  • David Brownfield as Co-Executive Producer
  • Amanda Slater as Producer
  • Erica Meredith as Producer
  • Alec Chorches as Producer
  • Rachel Cates as Co-Producer
  • Andy Callahan as Co-Producer
  • Marc Ritzema as Director Of Photography
  • Malchus Janocko as Production Designer
  • Chris Conlee as Editor
  • Atli Örvarsson as Music
  • Jonathan Strauss as Casting
  • Claire DeMorest as Executive Story Editor

Background information and Notes


FBI season 3
Episodes Never Trust a StrangerUnreasonable DoubtLiar's PokerCrazy LoveClean SlateUncoveredDiscordWalk the LineLeverageChecks and BalancesBrother's KeeperFathers and SonsShort SqueezeTrigger EffectStraight Flush
Other Seasons Season 1Season 2Season 4Season 5