In 1991, bodies began to appear in the Austrian Alps.

A heat wave had hit the region and the melting glaciers revealed one corpse after another.

A hiker who went missing in 1981, a couple from Vienna who disappeared in 1934, each had fallen into a crevasse, deep chasms

in the ice that pose an enormous hazard to skiers and mountaineers alike.

Even people with the best equipment can fall in, get stuck, and perish before anyone finds them.

One of the bodies that appeared that summer was unique.

No missing persons report, no modern equipment, this body had been frozen for 5,300 years.

Before the Great Pyramids were built, while woolly mammoths walked the earth, this mummified

ice man drew his last breath.

Scientists named him Otsi after the region of the Alps where he was found.

Scientists studied Otsi and learned that he'd been murdered.

He had an arrow in his back and a broken nose.

On the modern day border between Italy and Austria, Oety was attacked before he froze.

Linda and Bob McPherson watched the news of Oatsy's discovery intently, wondering if their son had met the same fate.

Two years earlier, Duncan McPherson, a 23-year-old former NHL player, had disappeared during

a trip to Europe.

20 miles from Otsy's final resting place,

the McPherson's were working tirelessly to learn what happened to their son. They drained

their retirement savings to spend summers in Austria, chasing down every lead that they could

find, usually with no luck. For the most part, they found themselves budding heads with local

authorities who seemed

disinterested in solving the case entirely. The Austrian government was quick to open and quicker

...