What are some examples of situational irony in The Open Window?

I am writing an essay on how situational irony impacts the theme. The theme I have chosen is "If you don't use logic and question things, believing everything you hear can lead to negative effects". I also need a quote to support why there is situational irony, please include paragraph number if you include a quote. I need to have this submitted to my teacher by 4 pm today, October 11th 2019. Thank you.