On a hot July day, three elderly people are found dead in a dilapidated house in Primrose Hill. Reading the story in a newspaper as she prepares to leave the country, Marie Gillies has an unshakable feeling that she is somehow to blame.

How did these three people come to live together, and how did they all die at once? The truth lies in a very different England, and in the secret world of the ladies of the house...