On 13th May 1917 the Virgin Mary appeared for the first time above a small oak tree before three young shepherds – 10-year-old Lucia, 9-year-old Francisco and 7-year-old Jacinta – in the Cova da Iria valley close to the Portuguese city of Fatima. She was clothed in a bright white robe. She told the children that she was coming from Heaven and that she wanted them to come to that place for the next six months on the 13th day of the month. One by one the Virgin Mary revealed three secrets to them. The First Secret involved a vision of...