Horrible Conspiracies Elizabeth R : Season 1 Episode 4

As long as Mary, Queen of Scots lives, she is the focus of plotters and revolutionaries. Despite a harsh clampdown against conspiring Catholics, Mary, in domestic exile, inspires an earnest attempt to overthrow Elizabeth. Is the execution of Mary the only way Elizabeth will remain on the throne? Sir Francis Walsingham definitely thinks so, and will use any means to convince Elizabeth to eliminate Mary. But Elizabeth fears Mary's death will condemn her in the eyes of God. In the end, Elizabeth makes the final tragic choice.