The Midsomer Regatta is halted by the discovery of the body of the chairman of the Midsomer Rowing Club floating at the finishing line.

An elderly woman is found dead in her cottage and DCI Tom Barnaby is convinced the death is not down to natural causes.

Barnaby and Scott investigate when the dead body of rival employee, Dexter Lockwood, is found in the Plummer family's factory steriliser.

The village of Midsomer Barton is celebrating Oak Apple Week when a local single mother, Marion Slade, is found drowned in the village stream. It looks like suicide, and that she was driven to it by grief over the death, eight years before, of her daughter, Bella, a local beauty pageant winner. Barnaby investigates and is shaken by two villagers who look like murder victims from his past. Then another body is discovered and it appears that the festivities have stirred up a cocktail of adultery, contempt, unrequited love and revenge in the village. And it all appears to center around Bella Slade.

Barnaby and Jones investigate the shooting of a blackmailer, Martin Barrett. But he had so many victims, they are spoiled for choice for a suspect. Then one of his victims, Sir John Waverley, gets another demand. The trail leads them to the seaside and diving for treasure on an uncataloged wreck.

Faith Alexander arrives in Midsomer Deverell to visit her estranged Uncle Rex, much to the surprise of his friends and associates who had been told she was dead. The problem is Rex is missing and Barnaby's initial investigation into his disappearance becomes more sinister when Rex's body is found at the bottom of the weir. The case becomes more complicated as it appears the eccentric Rex left several different wills and everyone wants a slice of his estate. Was this the reason for murder, or is it related to a family feud from 40 years ago? What was the secret of the feud? Those who know are not saying but someone is prepared to commit further murders to ensure it is not revealed.

Barnaby rocks!!! Barnaby dusts off his LPs and reminices about his younger days as a member of a rock band, (much to the amusement of Jones) when his former rock idols Hired Gun', reform to play the Midsomer rock festival. Backstage, however, the old tensions which caused the group to split quickly resurface, and there is still the unexplained mystery of the band member who disappeared 30 years ago. It becomes evident that not everybody shares Barnaby's enthusiasm for the group when one of their members is electrocuted on stage at their opening gig. Who is responsible? Is it one of the band or their sinister butler. Barnaby has to cast aside his fan cloak for his professional one to investigate.

The building of a new road attracts protesters to a small Midsomer village, and it seems to be motive for murder. As Barnaby and Jones delve into the complicated nature of this Midsomer village, they realise the key to solving the case lies under a well-concealed pact between several of the villagers.

When farmer Martin Strickland is covered in truffle oil and mauled to death by a wild boar, the investigation leads to restaurant Wyvern House and its tyrannical chef.

Could a ballad made famous by late, lamented folk singer Johnny Carver be an inspiration for murder? Did someone want to kill Toby Winning for threatening to take the Little Crosby Folk Festival away from Midsomer – or is the true motive something hidden for 20 years?