This story is a Proof with moral certitude of the authorship of the document together with some account of the whole thirteen gunpowder conspirators, including Guy Fawkes. Spinks follows the fascinating real-life tale of a group of Catholics who conspired to blow up The House of Lords while the King was there to open Parliament - a plan that came to be known as the Gunpowder Plot. Guy Fawkes, one of the conspirators, was given the task of igniting the gunpowder stashed in a cellar underneath the House of Lords. But, a few days before the opening of Parliament, a Lord called Mounteagle received an unsigned letter warning him not to attend the ceremony. He showed the letter to the King's Chief Minister and it was believed that there was a plot afoot. A search was ordered and Fawkes was discovered and arrested. No one is certain who wrote the letter to Lord Mounteagle, but Spinks argues that because of family connections, Christopher Wright was the Gunpowder Plot conspirator who betrayed his friends and coerced the Jesuit Oldcorne into writing the famous letter.