The Adventure of the Devilish Footnote
The wealthy owner/publisher of England's most prestigious literary journal holds a soirée for the writers, critics and intelligentsia of London (modelled on the Bloomsbury Group) and is poisoned by one of the departing guests. Her brilliant secretary/editor almost dies too.
The Adventure of the Treacherous Trust
A beautiful, brilliant young woman attracts the attention of a wealthy, older gentleman. He insist that she join the board of directors of a popular charity, run by his son. A meeting of the directors is held at the family estate. She attends and quarrels with the son. An hour later, she falls off the roof terrace. Nobody can believe that her death is anything but a tragic accident. Nobody, that is, except her sister, Miss Violet Westbury.