The incredible story of a spy who parachuted into Nazi-occupied Europe disguised as a nun has been revealed after she died aged 94. Just before her death Margaret Spencer wrote of her days as a Second World War spy, being shot in the back by a German sniper and caught by the Gestapo. She had been silent for 50 years after signing the Official Secrets Act - and her account was a shock to all but her closest friends and family in her village near Eastbourne, East Sussex...