Genre is a category of artistic works that is defined by particular techniques and forms of expression. In the 21st century, the genre of media works has become more open to interpretation due to the large volume of content produced. A short film can challenge perceptions of genre by blending elements of multiple genres in new ways. Genre is constantly evolving through creative works that inspire further innovation, rather than limiting the types of stories that can be told. For example, the short film "Across the Hall" has characteristics of both the thriller and film noir genres through its ambiguous title, lighting techniques, and use of an unreliable narrator to keep the audience guessing about a character's identity.