Investigators find a new clue about the missing Malaysia Airlines flight that disappeared in 2014; an astronaut spots something strange in the Sahara Desert; a mysterious orange sludge invades a remote village in Alaska.

A dagger sealed in King Tut's tomb for more than 3,000 years is made of a metal that seems to have extraterrestrial origins. A massive swastika is found in the desert near Roswell, NM. Satellites hunt for the world's most wanted man, Joseph Kony.