A couple who found secret German messages from the Second World War under their floorboards are trying to crack the puzzle with help of a neighbour - a 95-year-old Bletchley Park code breaker. John and Val Campbell discovered a cache of wartime items hidden in their house, in Guernsey, by a German soldier in the 1940s - when the Channel Islands were occupied by Adolf Hitler's forces. It included cigarette packets, matches, a shampoo sachet, a fuse wire pack, throat pastilles - and even brothel passes. But there was also an envelope addressed to a German man named Ernst Buchtela, along with pi...