Whilst Margaret Beaufort plans to marry Elizabeth's sisters to Tudor lords and betroth Arthur to Spanish princess Catherine of Aragon Elizabeth persuades Henry to free Edward from prison. However support for the boy increases Henry's paranoia. Meanwhile the events in Burgundy during Jasper's stay propel the duchess into sending an invasion force, leading to a pitched battle where Henry is triumphant. Henry shows mercy to Lambert Simnel, the child the Burgundians have passed off as Edward V and, to Margaret Beaufort's disgust, Elizabeth's mother.
—don @ minifie-1