1) The document discusses strategies for promoting a fictional thriller film called "Mrs. Williams".
2) It analyzed similar successful films like "The Perfect Guy" and "Fifty Shades of Grey" that used trailers to promote their films, so they created their own trailer for "Mrs. Williams" and posted it on YouTube.
3) Key elements of the trailer include fast-paced editing, ominous music, and a cliffhanger ending to generate curiosity and anticipation in the audience about what will happen, meeting expectations of the thriller genre.