Murder at the Post Office: Story, Cast and Series Facts

Story and premise

In 2010, the Yorkshire village of Melsonby was left in disbelief when postmistress Diana Garbutt was found murdered in the post office she ran with her husband, Robin. Robin claimed she'd been the victim of a violent intruder, but as detectives probed further, suspicion began to fall on him.

Prosecutors claimed  that behind the façade of a happy marriage lay deep marital and financial turmoil and £16,000 missing from the safe. They argued that when Diana confronted Robin over the missing money, he killed her. In 2011, Robin Garbutt was sentenced to life in prison.

Robin has always maintained his innocence and over the last 14 years has unsuccessfully appealed his conviction three times. But with one of the central planks of the prosecution coming from the Horizon system — the technology now at the centre of the Post Office scandal — Robin and his legal team are once again attempting to clear his name.

Murder at the Post Office meticulously re-examines the case, featuring voices on both sides: those convinced Robin was wrongfully convicted and others who are unsure and still suspect he is guilty.

Series details

• Title: Murder at the Post Office
• Format: Documentary
• Language: English
• Genres: Crime
• Premiere date: 2025-12-29
• Status in TVmaze: Running
• Network listed by TVmaze: Sky Documentaries
• Network country: United Kingdom
• Typical episode runtime: 60 minutes
• TVMaze ID: 89059

Seasons in the TVmaze catalogue

• Season 1: premiered 2025-12-29; final listed air date 2026-01-12; episode order: 3.

Source and licence

Adapted from Murder at the Post Office on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.