Answer and Explanation:
As you did not inform what the stories were presented in the unit, I used the story "The mysterious stranger" by Mark Twain to answer the question.
"The mysterious stranger" by Mark Twain is a great example of how this theme presents itself in literature, since this story is based entirely on the arrival of a strange and mysterious young man in the city, who claims to be an angel and nephew of Satan. The young man begins to carry out a series of surprising actions, causes fulminating deaths, teleports, visions, time passages, among other things, completely changing the lives of the protagonists and the city as a whole.