Nick and the team discover someone is out to sabotage a young woman's wedding, and when her ex-boyfriend makes a suprise return to Aidensfield declaring his love for her, suspicion falls on him. But Nick thinks otherwise. On the day of the wedding, the church is sabotaged, threatening the lives of everyone inside. Meanwhile, Kate receives a visit from her aunt Eileen and discovers she has inherited some money from her Uncle Henry. however, she refuses to take it. A suspicious Nick wonders what his wife is hiding. But Kate is unable to reveal her secret, knowing it would devastate her aunt. And, an old friend of Greengrass's sells him stolen sea food which gives some of the villagers food poisoning.