I need to write a research paper on "The Fall of the House of Usher," but I cannot come up with a good thesis. Any ideas?

There are, arguably, some autobiographical elements of Poe's own life woven into "The Fall of the House of Usher."  An interesting research paper could result in noting the similarities between Roderick Usher and Edgar Allan Poe.  One could look into Poe's interest and talents in other forms of art besides writing short stories and poetry, particularly drawing and music.  Because the story has a theme of incest and its disastrous results, one could research the...

There are, arguably, some autobiographical elements of Poe's own life woven into "The Fall of the House of Usher."  An interesting research paper could result in noting the similarities between Roderick Usher and Edgar Allan Poe.  One could look into Poe's interest and talents in other forms of art besides writing short stories and poetry, particularly drawing and music.  Because the story has a theme of incest and its disastrous results, one could research the facts of Poe's marriage and childlessness.  The mysterious illness from which Madeline suffered could be related to the deaths of women in Poe's life.  Poe's own tastes in literature could be compared to the books in Roderick's library.

For a thesis statement, something along the lines of this example could be effective:  Though "The Fall of the House of Usher" is a work of fiction, its protagonist has many of the character traits and interests of Edgar Allan Poe himself, which suggests autobiographical connections.