Episode 27 - The Disappearance of Frederick Valentich: UFO's, an ocean phenomenon, or a paranoid pilot?

Frederick Valentich was a 20-year-old man, training to become a pilot. In late October 1978, during a solo flight between Melbourne and King Island, Frederick made radio contact with Air Services to report a suspicious unidentified aircraft circling around his plane. The contact lasted for a few minutes, ending with some metallic scraping noises, and then silence. Despite a large-scale air and sea search, no trace of Frederick was ever found, leading people to ask, was his disappearance related to the "unidentified flying object", or did he fall victim to an unfortunate pilot's error?