Based on the crime-novel series by author Caroline Graham, "Midsomer Murders" follows the efforts of Detective Chief Inspector John Barnaby to solve crimes that occur in the wealthy, isolated English county of Midsomer, a picturesque and peaceful place on the outside but one filled with amoral and snobbish eccentrics with all kinds of vices. His latest assistant is Detective Sergeant Jamie Winter. DCI Barnaby took over in series 14, replacing his older cousin, Chief Inspector Tom Barnaby, who retired.

Barnaby and Nelson uncover a conflict between the village church and ancient pagan traditions when a pub landlady is crushed to death during a magic show.

Barnaby investigates whether a ballad made famous by a late, lamented folk singer could have been the inspiration for a murder.

When a wine launch turns deadly, Barnaby tries to find out who is targeting the Midsomer Vinae Winery and what it has to do with the death of a child in a hit-and-run accident.

Wealthy landowner Gregory Lancaster's body goes missing on the night of his death exposing a sinister web of secrets and lies in the village of Little Malton.