A row between keen birdwatchers in Midsomer-in-the-Marsh turns nasty when their president is killed. Patrick Morgan met his death while hoping to sight a rare bird, but is his obsession with ornithology to blame - or something more sinister? Barnaby and Jones attempt to discover the truth.
Barnaby and Jones enter the cloistered and old-fashioned world of Midsomer Priory after a nun is found strangled. Jones visits the local pub, where he learns that a woman was seen acting strangely on the day of the murder, and that teenagers in the area sneak into the priory grounds for romantic liaisons. Later, the nuns discover that a valuable silver altar set has vanished, then the chaplain is found murdered.
Barnaby and Jones are sampling the local cider at Midsomer Abbas spring fair when the body of a missing tax inspector is found floating in the cider vat. Meanwhile, publican Samuel Quested says that he wants to restore an ancient rite called the Stag in which men go in search of women from another village in order to 'refresh the gene pool'. As Barnaby and Jones investigate the murder they uncover an array of motives.
A social services investigator calls on elderly eccentrics William and Mary Bingham, but he is sent away rudely by their daughter Selina and her husband Eddie Stanton. Artist Maggie Viviani also had a run-in with the investigator, so when his body is found in the river, they all come under suspicion. Barnaby learns that the Binghams never recovered from losing their elder daughter and son in a drowning accident.
New DCI John Barnaby is intrigued when he learns that the remains of famous racing driver Duncan Palmer have been discovered at Darnley Park School - 40 years after he was thought to have drowned in the Lake District. During the school's classic car show, racing legend Peter Fossett is annoyed that his fellow judge is club DJ Dave `Doggy' Day, who knows nothing about cars. Soon afterwards, Doggy is crushed to death.
Schoolteacher Connie Bishop keeps waking in the night, convinced she has an intruder. Just days later a local councillor, said to be obsessed with her, is found murdered in her garden. Is Connie the innocent victim she seems? Barnaby and Jones uncover jealous rivals, ruthless social climbers and a cottage with secrets as they search for the killer in Badger's Drift.
A burglar known as `the Creeper' terrorises Midsomer as Barnaby and Jones investigate the murder of a dinner party guest at upper-crust Chettham Park House. The detectives discover a group of high society friends with links both to gangsters and the Chief Constable dating back to the 1960s, but do the friends also have secrets worth killing for?
DCI Barnaby's secret past as a spy is revealed when a former agent is found dead after a cricket match in Midsomer Parva. While locals blame the brutal killing on the `beast of Midsomer', Barnaby suspects otherwise. He soon finds links to a network of spies that operated in Cold War Berlin, but his investigation is obstructed at every turn.
DCI Barnaby finds a tangled world of crime and intrigue in the art world. A recently discovered masterpiece by local artist Henry Hogson realises an impressive price at auction just hours before its previous owner is tortured and killed. Can Barnaby and Jones prevent the body count from rising further?
The peaceful setting of prestigious Whiteoaks Golf Club is rocked by death and controversy when a golfer is bludgeoned to death near the notorious 13th hole known as Crisp's Folly. Barnaby and Jones discover gambling is rife at the club - along with illegal money-lending and violent assault. Then, as the club considers giving ordinary villagers full membership rights, another golfer is killed.
When Julian Shepherd is found drowned, it seems as though he committed suicide due to all his money being tied up in Charles Edmonton's latest invention. When another man dies after poaching peregrine eggs from Charles's wife, Barnaby suspects foul play.
Barnaby investigates a death which looks like suicide. The dead man was a troubled and depressed gambler on a losing streak, but Barnaby's nose tells him to look for a murderer and then recognises someone from his past, in the shape of Dr Jane Moore.
Barnaby and Troy have to solve a double murder when a feisty former socialite and a Casanova are found bludgeoned to death. However, the motives for the murders seem disparate, and there are several people who are suspected of involvement.
In the sleepy village of Martyr Warren, two opposing groups of travellers have set up home. DCI Barnaby and DS Troy are called in to investigate when the local magistrate, principal adversary of the new arrivals in the village, is found shot dead at his home.
Mysterious events and the discovery of his relative's body lead the residents of Aspern Tallow to believe that Jonathan Lowrie's ghost is at large in their community. DCI Barnaby and DS Troy attempt to determine whether these strange occurrences are supernatural or if there is a more rational explanation.
The residents of Elverton-Cum-Latterly battle in the Dominoes Competition that dates back decades, but when the event occurs the same night as a drag queen fundraiser for a terminally ill teenager, it results in a deadly clash of cultures.
Pastry chef Chrissie Larkton's mill has been in her family for centuries. She restored it and turned it into a thriving online business, but the popularity has overshadowed Lower Blissingham, and many of the villagers are not happy about it.
Gated estate Challis Court is a tight-knit community for retired police officers, but when a new arrival is found dead, the other residents regard the murder as an affront. Barnaby realizes that the killer is likely an ex-police officer.
When a survivalist is found murdered in his bombproof shelter, Barnaby unravels a dark conspiracy to reveal how far people will go to escape the end of the world.
Barnaby begins to question the guilt of a Midsomer Malham woman who is on trial for the murder of her best friend. The evidence is stacked against her, but she doesn't appear deluded or obsessed with the dead woman's husband as the prosecution claim. With the help of a frail pensioner - the key witness, can Barnaby and Jones discover what really happened on the night of the murder?