LIKE any devoted dad, Tim Blackman had concerns when daughter Lucie decided to quit her air hostess job and go travelling-but conceded a few months in Japan would be a “ fantastic experience ”.... Two days later Tim was in his garden when her pal Louise called saying Lucie had gone missing.“ I thought there must be some rational explanation," he recalls.“ But there were three or four more calls and I knew something had gone wrong.... But there were three or four more calls and I knew something