S10:É08 - S10:E08 - Death in a Chocolate Box

Barnaby is in Midsomer Holm, bidding farewell to reformed criminal Ronnie Tyler, who has taken part in a rehabilitation scheme in the village. Also present is disgraced ex-policeman Jack Colby, a former colleague of Barnaby's – but Jack refuses to talk to his old friend. When Jack is murdered, the detective must delve into the dark secrets in the victim's past. There are certainly dark secrets to uncover, and Barnaby has to determine whether the victim's part in a scandal years earlier at Causton police station, is key to the mystery behind his death. It isn't long before he finds that Eddie Marston is attempting blackmail, and soon murdered as a result, and that Lord Holm is in love with Jack's wife, psychotherapist Gina.