For those of us who process Torah better visually, a
translation of the Malbim Haggadah is available online. Putting aside the question if the Malbim really wrote it, the author does an incredible job of showing that the entire structure of Maggid is derived from the one verse "And you shall relate to your child on that day, saying: "It is because of this that Hashem acted for me when I came forth out of Egypt."