Susan Calman hosts as three amateur sleuths head to the fictional town of Mortcliff to solve a deadly crime. In today's story, the amateur detectives must decide if it was an inside job when the body of a member of a notorious criminal gang is found.

In today's story, the armchair detectives must identify the killer among a number of suspects when the body of a local dairy farmer is found. Was it the environmentalist, detectorist, museum curator, neighbour or the local postman?