Newly released FBI documents pertaining to the D.B. Cooper hijacking case include a letter that may only deepen the mystery surrounding the notorious unsolved crime which marks its 46th anniversary ...

A nine-digit number typed at the bottom of a letter believed to be sent by the infamous hijacker D.B. Cooper confirms the letter could have come from only one person, according to a cold-case ...

It's the case that won't go away. The only unsolved case of skyjacking in U.S. history remains unsolved, but a team of investigators is confident it has identified the culprit, his co-conspirators, ...

“Sirs, I knew from the start that I wouldn’t be caught,” the letter begins. Postmarked Dec. 11, 1971, it was signed, “D.B. Cooper,” the name the press had given to the unknown criminal who, less than ...