Alan cancels the wedding off and Robbie grows closer to Gillian.
John reveals Kate and Caroline's secret and Alan finds that selecting his Best Man is not an easy task.
When Celia and Alan are away for the night, Gillian and Caroline get to know each other.
Whilst looking for somewhere to hold their wedding, Alan and Celia find themselves trapped in a mansion known to be haunted.
Alan and Celia decide to forgo an engagement ring and splash out on a sports car instead.
Inspector Barnaby's birthday is soon coming up, and Tom is reminded that he's nearing the age when his father died prematurely of a stroke. He starts thinking about his existence and how he wants to spend the rest of his life. Together with Joyce he goes to Midsomer Health Farm for a peaceful weekend. His weekend naturally ends up far from being peaceful...
This is John Nettles' last episode of Midsomer Murders.