After Guy and Amanda ask Sidney to perform their wedding ceremony, the heartbroken vicar takes solace in a bottle. When Mrs Maguire points out he is failing in his duties to his parish, Sidney vows to take a break from drinking and assisting in criminal investigations. Concentrating on his clerical duties, he helps Leonard as he moves into the vicarage, and agrees to help parishioner Isabel as she prepares for her upcoming wedding to new man in town, Arthur. But Isabel's stubborn mother, Daisy, is proving to be a big impediment to their wedding - mostly because she believes that Arthur is out to kill her.
Sidney just wants to see the best in people, but when Daisy is found dead, Mrs Maguire, believing Arthur to be a 'rotten apple', goes behind his back and calls in Geordie to investigate. Sidney finds himself reluctantly being dragged into the investigation. Whilst Daisy's death seems to be due to natural causes, it seems all the more suspicious that Arthur and Isabel are pushing for a fast cremation of the body. What is it that they don't want to be discovered? Things take a darker turn when Daisy's sister Gladys is also found dead - and this time, from a suspected poisoning. With secrets about Arthur's past beginning to come to light, and with a mysterious stranger stalking the town, it's up to Sidney to try and work out whether or not these deaths are connected, and in so doing, potentially stop any further killings. And all this, without even being able to go down to the pub for a pint.