Secrets of the Dead - Season 5 (2003)

In 1942, the Japanese army had captured more than 200,000 Allied prisoners of war and needed a supply route to its frontline troops in Burma. POWs and thousands of Asian laborers were ordered to complete a railway linking Thailand and Burma that would include the infamous "bridge on the River Kwai." Meanwhile, the U.S. was developing a "smart bomb." In late 1944, a group of rescued POWs provided the first accurate information about targets along the railway, and the railway was destroyed.

Scientists investigate the Spanish Flu, an unusually severe and deadly strain of avian influenza that caused the 1918 flu pandemic which killed almost 100 million people around the world.

Scientist investigate the Turin Shroud, a linen cloth that bears the image of a man who some believe to be the Jesus of Nazareth. Some also believe that the cloth is actually the burial shroud he was wrapped in after the crucifixion.