I suspect the house we’re renting is haunted. Last night I dreamed my husband was carrying a blond child about three years old. The child was crying. I took the child in my arms but could not comfort her. Then at around 5 am I heard someone say “Mother,” clearly and out loud. The sound woke me up. I looked at the clock and then at my sleeping husband thinking how strange it was that I’d never heard him talk in his sleep before and how funny it was that he’d said “mother.” Just as I was dozing off, I heard the word “Mother” again. It was not my husband’s voice. I heard whispering in what seemed like the next room. I sat up in bed and put my ear to the wall that separated our bedroom from the room our boys were sleeping in—all quiet. And neither of them has ever called me “mother.”
This is perhaps one of Shakespeare's more interesting plays, if you will. In comparison to Macbeth it isn't quite the walk in the park.
I think conceptually it enables the reader to see that characters can influence characters to such a degree that the original traits are masked and changed. Tragedy in this play is definitely a main component - and a great emphasis that perhaps the villain doesn't always find their true defeat. In a way, wasn't the "villain" successful? He lied to everyone and pretty much killed whomever got in his way.