Mission Declassified

For over 20 years, investigative journalist Christof Putzel has uncovered major stories that powerful people have wanted to keep hidden. He's exposed illegal weapons smuggling, child labour camps and much more. Now, in this fascinating series, he sets his sights on some notorious cases that were never solved. Using declassified government files and his own investigative skills, he aims to shed light on some of the biggest mysteries around. What was the real identity of legendary airplane hijacker D.B. Cooper? And, who was responsible for the famous theft of hundreds of millions of dollars' worth of fine art from the Isabella Stewart Gardner Museum in Boston? With all this new information, Christof aims to finally solve these mysteries and many more. (Travel Channel)