Mary’s claim to the throne was as the Great granddaughter of Henry VII so William Cecil viewed her as a dangerous and poisonous threat to Elizabeth's throne
Elizabeth proposes Mary marries Dudley (due to his loyalty to Elizabeth) but Mary marries Lord Darnley, seen as a threatening marriage as Lord Darnley is an English Catholic with royal blood and has affairs with men and women
David Rizzio was rumoured he was having an affair with Darnley and Mary (unlikely he was with Mary) and was stabbed by Darnley - traumatised Mary
Naked men in Darnley’s house but he runs out when they set an explosion but then was strangled by the people carrying out the plot
Mary comes to England (1568) as she panics after being forced to abdicate her throne - they threatened to cut her throat; Cecil immediately has her put on house arrest surrounded by loyal Protestants
Elizabeth claims they cannot meet because Mary is still embroiled in the scandal of Lord Darnley’s murder; Mary is imprisoned for 18-19 years in many castles all over England
Cecil finds evidence of Mary’s threat to Elizabeth: his spies intercept encrypted letters from Mary’s supporters and shows a plot to put Mary on England's throne (the Babington Plot)
Mary lost hope for her crown and went after Elizabeth's; pronounced guilty on October 25th, 1586, Cecil uses made up Spanish armada invasion to pressure Elizabeth to sign for the execution on February 8th, 1587
Elizabeth begins to blame everyone else for this but herself, claiming she wasn’t aware of what she signed; she was always denying her responsibility, and to James she lied and blamed her councillors
Mary is immortalised as a catholic Martyr - the damsel in distress