One Chicago & The FBIs Wiki
When to Let Go
Season: 4
Episode: 2
Original airdate: October 3, 2018
Written by: Diane Frolov
Andrew Schneider
Danny Weiss
Directed by: Charles S. Carroll
Episode chronology
Previous episode: Be My Better Half
Next episode: Heavy is the Head


The doctors and nurses of Chicago Med find themselves on high alert when an overflow of patients are rushed into the doors following a terrifying apartment complex blaze. Dr. Rhodes fights to save the life of one of "Chicago Fire's" own, while Dr. Halstead and his brother Jay struggle with their own personal battle.


Main Cast

Special Guest Stars

Guest Stars


  • Casey Tutton as Nurse Monique Lawson
  • Lorena Diaz as Nurse Doris
  • Tonray Ho as Nurse Leah
  • Jeremy Shouldis as Doctor Marty Peterson
  • Desmond Gray as Paramedic Desmond
  • Fernando Del Cuadro as Distinctive Man
  • Geneva Maccarone as Jane Doe
  • Elena Cohen as Blair Scott
  • C. Anthony Jackson as Security Guard Earl
  • Keenan Browder as Security Guard Nate
  • Scott Philyaw as Security Guard #1
  • Randall McDonald as Security Guard #2
  • Priya Mohanty as Female Patient
  • Barbara Blomquist as Distraught Woman
  • La'Shawn Hazelwood as Nurse La'Shawn
  • Angel Preston as Nurse #2


Background information and Notes


Chicago Med season 4
Episodes Be My Better HalfWhen to Let GoHeavy is the HeadBacked Against the WallWhat You Don't KnowLesser of Two EvilsThe Poison Inside UsPlay by My RulesDeath Do Us PartAll the Lonely PeopleWho Can You TrustThe Things We DoGhosts in the AtticCan't Unring That BellWe Hold These TruthsOld Flames, New SparksThe Space Between UsTell Me the TruthNever Let You GoMore Harm Than GoodForever Hold Your PeaceWith a Brave Heart
Other Seasons Season 1Season 2Season 3Season 5Season 6Season 7Season 8