While tidying up a small garden in the very center of Callander Square, gardeners accidentally discovered the remains of two babies in the ground. The examination showed that they were not buried at the same time: the first body was buried in the ground about two years ago, the second - quite recently. An unheard of scandal for this area of London, where representatives of the upper classes live! The most obvious version seems to be that this was done by some maid who wanted to hide the traces of her moral decline. Police Inspector Thomas Pitt finds it difficult to obtain testimony from noble owners and their households. However, the search gives him reason to believe that this case is not so obvious. The facts are that anyone in Callander Square could be a criminal. However, although ladies and gentlemen do not want to divulge their secrets to the police, they are accustomed to living with rumors about their neighbors. Pitt and his smart wife Charlotte take advantage of this. Where male logic fails, female cunning can work, and the most hopeless case can be solved...