Growing up, Adam Hart heard all about how his great-grandad escaped from the Nazis during a perilous journey across Europe.
RAF pilot Frank Griffiths miraculously survived after his plane was shot down above France and spent three months trekking across occupied territory to freedom.
But when Adam decided to retrace the airman’s footsteps, he discovered a whole host of other unsung heroes – including female resistance fighters who risked their lives to save Frank.
