This is a country house mystery with a difference, especially as it is set in a much later period than most such novels, which usually take place in the period between the wars. Antonia Darcy is a middle aged, recently divorced, librarian who has written one mystery novel and is suffering writers block. While searching for ideas, she realises that it is the twentieth anniversary of a mystery at which she was present. Twenty years earlier, she had been at a house party to celebrate and watch the royal wedding of Charles and Diana. While all the adults attention was on the television, the young daughter of one of the couples wanders off and her doll is found in the river, although the body of little Sonya is never found. When Antonia thinks she spots Lawrence Dufrette, the father of Sonya, the coincidence leads her to investigate what happened; along with Major Hugh Payne who, it has to be admitted, is more interested in Antonia than the crime.
This is a delightful cosy mystery with a lot to recommend it. Both Antonia and Hugh are pleasant characters and there is a good cast of suspects, including a mother who is a volatile Russian alcoholic, a nanny who suddenly came into a windfall shortly after the disappearance of her charge and a major row between two guests on the morning of the royal wedding. As Antonia discovers the shocking truth about what really happened to little Sonya Dufrette, the plot comes together in a very believable way. Excellent start to a series and I will certainly read more.