Mary, Queen of Scots ‘locked’ final letter using paper-folding, research finds

Mary, Queen of Scots used a complicated “letterlocking” process to conceal the secrets of the last letter she wrote before she was beheaded, researchers have discovered.

Written in French on 8 February 1587 to Henry III, king of France from her prison cell, the letter sees Mary write that she has “been advised of my sentence: I am to be executed like a criminal at eight in the morning.