Episode 4

 is the fourth episode of the first season of World on Fire. It aired on October 20, 2019.

Synopsis
Harry's courage is tested at Louvain as he comes face to face with a German sniper, and Kasia's resistance activity in Warsaw intensifies.

Cast

 * Julia Brown as Lois Bennett
 * Jonah Hauer-King as Harry Chase
 * Blake Harrison as Stan Raddings
 * Helen Hunt as Nancy Campbell
 * Zofia Wichlacz as Kasia Tomaszeski
 * Ewan Mitchell as Tom Bennett
 * Sean Bean as Douglas Bennett
 * Lesley Manville as Robina Chase
 * Max Riemelt as Schmidt