The Rye House Plot of 1683 was a plan to assassinate King Charles II of England and his brother James, Duke of York. The royal party went from Westminster to Newmarket to see horse races and were expected to make the return journey on 1 April 1683, but because there was a major fire in Newmarket on 22 March, the races were cancelled, and the King and the Duke returned to London early. As a result, the planned attack never took place.