The Throckmorton Plot was a threat to Queen Elizabeth because the goal of the plot was to possibly kill Queen Elizabeth and replace her as queen with Mary Queen of Scots
The papers contained details of the planned French invasion. Under torture, Throckmorton confessed to his role in a plot to overthrow Elizabeth and replace her with Mary Queen of Scots. He claimed that the plot was not well advanced, mainly because Philip II had not yet provided the finance for the proposed invasion.
