One Chicago & FBI Wiki
One Chicago & FBI Wiki
An Even Bigger Surprise
Season: 6
Episode: 3
Original airdate: October 12, 2017
Written by: Jill Weinberger
Directed by: Sanford Bookstaver
Episode chronology
Previous episode: Ignite on Contact
Next episode: A Breaking Point


Lt. Casey gets off on the wrong foot with Sam Mullins, a temporary Chief who is filling in for Boden at House 51 for the morning. When Casey later makes a risky move in an attempt to save a distraught man from jumping off a building, Mullins has a surprise that Casey does not expect. Mouch flies in Cruz's brother Leon as a birthday surprise, but the rest of the squad struggles to keep it a secret. Meanwhile, Brett is caught off guard when she learns new information about her hometown friend Hope.


Main Cast

Guest Stars


  • Chris Holder as Dan Harris
  • Lee Stark as Rachel Harris
  • Anthony Ferraris as Squad 3 Driver Tony Ferraris
  • Darnell Jordan as Glenn
  • Briana Jackson as Ella
  • Rachel Miller as Tanya Hayes


Background information and Notes

Chicago Fire season 6
Episodes It Wasn't EnoughIgnite on ContactAn Even Bigger SurpriseA Breaking PointDevil's BargainDown is BetterA Man's LegacyThe Whole Point of Being RoommatesFoul is FairSlamiganLaw of the JungleThe F is ForHiding Not SeekingLooking for a LifelineThe Chance to ForgiveThe One That Matters MostPut White on MeWhen They See Us ComingWhere I Want to BeThe Strongest Among UsThe Unrivaled StandardOne for the AgesThe Grand Gesture
Other Seasons Season 1Season 2Season 3Season 4Season 5Season 7Season 8Season 9Season 10