In a gothic work, one commonly encounters

In a gothic work, one commonly encounters supernatural events. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

Supernatural Events.

Explanation:

Supernatural events are common in the work of the Gothic theme. The Gothic term is used to describe the work of literature which depicts ghouls, ghosts, and headless spirits that haunt the main characters. The Gothic literature dated back to the 18th century often deals with supernatural events that cannot be easily explained or control therefore kept in suspense and mystery. Mary Shelley's Frankenstein is one of the examples of supernatural events within the Gothic theme.  

the artist used rapid brushstrokes.