Question

Mystery settings often include one closed location. Why? For example, why would an author place an entire story and all the story's characters in a house?

Answer 1

I assume it would make the characters more vulnerable to the happenings of the mystery, whatever that may be... possibly staying in one place altogether for the entire story would create a sense of familiarity for the audience, it would also achieve and establish a sense of community that would enhance the story from a creative and business perspective...

I hope that helps.