"The Perfect Crime" is written in the first person: "I know I committed the perfect crime." Phoebe Wallowes, a well educated American woman, really irritates him. He also has a genuine terror that she will one day marry him. Something therefore has to be done.
Sapper's "Thirteen Lead Soldiers" has an ingenious plot to murder Conte de Dinard at a secret conference in an English country home. Captain 'Bulldog' Drummond and his friend Algy are called in to foil the plan.
As there is such a thing as 'love at first sight' so there is such a thing as 'instinctive first hate' as John Ericsson explains in "First Hate" to his closest friends one evening when he relates the events surrounding the disappearance of Hazel, a member of their shooting club, some ten years earlier.
"Markheim" visits jewelers on Christmas day in order to purchase a gift for a lady friend. Instead he murders the shop keeper. Thereafter R.L. Stevenson paints a fascinating picture of a murderer wrestling with his conscience.