Rent Midsomer Murders: Series 10: Death and Dust (2003)

When Delyth Mostyn announces that she is marrying local doctor James Kirkwood and selling her home to travel the world with him, her children are furious. According to local gossip, James is a serial womaniser who pushed his late wife over the edge. Unable to make a house visit one stormy evening, James lends a colleague, Alan Delaney, his new car and Alan goes in his place. When Alan's dead body is discovered the following morning Barnaby and Jones are called in and the investigation leads to North Wales.