A murder mystery unfolds in a rural English hospital during World War II, where a postman dies on the operating table. One of the nurses claims to have evidence identifying the killer, but the inspector is skeptical and suspects one of the five doctors and nurses present in the theater of committing the crime. The investigation becomes more complex as four poisonous pills go missing.

Green for Danger
A Scotland Yard inspector unravels a complex web of clues at a hospital, where a single mysterious death sparks a thrilling murder investigation.