What is the Initial Incident of the story The open window by Henry Gilfrond?

In "The Open Window" by Saki (H.H. Munro), the initial incident occurs when Mr. Framton Nuttel visits the home of Mrs. SAppleton to seek a cure for his nerves. Upon arrival, he encounters Mrs. SAppleton's niece, Vera, who entertains him with a chilling story about her aunt's tragic loss of her husband and brothers, who supposedly went hunting and never returned. This sets the stage for the unexpected twist that follows, as Vera's tale plays a pivotal role in the story’s climax.