S4·E5 Dark Autumn

Episode recap

In the fourth series of the long‑running British mystery, the episode titled “Dark Autumn” opens with a violent crime that shatters the quiet routine of the hamlet of Goodman's Land. A postman is found brutally murdered while on his morning round, an event that immediately draws the attention of Detective Chief Inspector Tom Barnaby and his new partner, Detective Sergeant Dan Troy. The investigation is assisted by WPC Jay Nash, a local police constable whose involvement deepens as the case unfolds.

Barnaby, Troy and Nash quickly discover that the deceased postman, identified as Dave, had cultivated a reputation for providing a “very personal service” to many of the village’s female residents. This service, hinted at in the evidence, appears to have provoked the jealousy of several husbands, suggesting a network of concealed adulterous affairs that runs through the community. As the detectives interview villagers, the pattern of resentment and secret relationships becomes increasingly evident, pointing to multiple possible motives for the initial killing.

The inquiry takes a darker turn when additional bodies are discovered, indicating that the murder of the postman was not an isolated incident but the first in a series of killings linked by the underlying tensions within the village. Each new death reinforces the notion that the community is riven with hidden betrayals, and the detectives must untangle a web of personal grievances to identify the perpetrator.

Parallel to the police work, a subtle romantic development emerges between Troy and WPC Jay Nash. Their professional collaboration evolves into a budding affection, adding a personal dimension to the narrative without detracting from the central murder investigation.

Throughout the episode, the hallmark atmosphere of the series—where the idyllic façade of rural Midsomer conceals violent undercurrents—is maintained. The detectives’ methodical approach, combined with the revelation of the village’s clandestine affairs, drives the story toward its resolution, while the nascent relationship between Troy and Nash offers a quieter, human counterpoint to the surrounding darkness.