The Crucible or Half Hanged Mary will be your primary text.
Possible topics include:
Birds and Witches in Half Hanged Mary and The Crucible
The Moon in Half Hanged Mary
The Crucible as Allegory (choose a modern witch hunt, such as the holocaust, Rwandan genocide, treatment of Muslims following 9/11, McCarthyism, McMartin preschool, 2006 Duke Lacrosse team scandal, etc.)