Mary, Queen of Scots, returned to the news headlines when the rosary she carried to her execution in 1587, was recently stolen from Arundel Castle. It's the latest chapter in the enduring story of this highly romanticised figure.  

Mary reigned over Scotland for just over 24 years between December 1542 until her forced abdication. Considered the legitimate sovereign of England by many Catholics, Mary was seen as a threat to Queen Elizabeth I. In this episode of Not Just the Tudors, Suzannah Lipscomb talks to Professor Kate Williams about Mary's tragic life, her disastrous marriages and the plots against Elizabeth that resulted in her execution.