This fascinating series continues as Robert Cecil, the son of William Cecil, who was banned from Elizabeth’s court following his part in the execution of Mary, Queen of Scots, carries on as the master of a spy network working for the Queen.

Historians reveal how cunning Robert defeated a brave but ultimately foolhardy earl and how he made sure the succession of power from Elizabeth to the next monarch, James, was all carefully managed to keep himself at the centre of power and influence.

However, his one mistake – letting a Catholic priest escape the Tower – will have explosive results in next week’s final episode.