Mary Walker Clark barely knew her father.
When he died, he left not only the obvious void every teen would experience, but took with him scores of Indiana Jones-style tales about flying the Hump, a treacherous series of US missions that transported supplies over the Himalayas to China during World War II.
It would take a chance interview with a pilot who had flown with her father in the war to launch a series of extraordinary journeys - into a shrouded past and halfway around th.