You think the murder is connected to Betsy. In the evening, a few hours before the sound gunshot, you had overheard part of her telephone conversation, where she had asked her brother to come home.
A few days ago, over a cup of morning coffee, you agreed with Prudence that you both hated Barbara.
The nature of your anger is objectively justified, but why does the cook dislike the minx? A week ago, Prudence brought you a note she found in her husband's office: ‘Barbara is cheating on you!’. You asked the cook not to tell anyone about the contents.
Knowing exactly the kind of society you live in (not a day goes by without some sort of scandal), you decided to keep this fact quiet. And to be fair, you were waiting for an opportunity to give Henry an unpleasant surprise.