Who was Guy Fawkes? He was a Roman Catholic who planned the failed Gunpowder plot on Parliament in the reign of James 1st of England. The main aim of this plot was to restore the Catholic religion and to get also rid of the Protestant King James and replace him with a Catholic monarch.
Your mission, BookCrosser, is to release a book at sunset with something related to gunpowder, treason, plotting, bonfires, or fireworks in the title or on the cover. Good luck!