Foyle--s War Series 4 Extra Quality Jun 2026

Arguably the darkest episode of the entire franchise, Bad Blood explores the intersection of science, patriotism, and mass death. A scientist working on a secret agricultural project is murdered, but Foyle quickly discovers the man was peripherally involved in biological warfare research.

The third episode, "The Fire in the Night," is a gripping and intense installment that sees Foyle dealing with the aftermath of a devastating air raid on Hastings. As the town struggles to come to terms with the destruction and loss of life, Foyle is tasked with investigating a series of suspicious fires that seem to be linked to the raid. As he digs deeper, Foyle uncovers a sinister plot that threatens to undermine the very foundations of British society. Foyle--s War Series 4

, it follows Detective Chief Superintendent Christopher Foyle (Michael Kitchen) as he navigates the complex social friction of wartime Hastings. Episode Guide Arguably the darkest episode of the entire franchise,

Unlike previous seasons, Series 4 is divided into four distinct chapters that explore the evolving stresses of the British home front: As the town struggles to come to terms

Series 4 of "Foyle's War" is available on DVD and can be streamed on various platforms, including Amazon Prime Video and BritBox.