In October, 1978, young Melbourne pilot Frederick Valentich disappeared without a trace while flying to King Island, to pick up some crayfish as a surprise for his parents.

Wreckage from the Cessna was not found, and Pinkney gives a rundown of the eerie radio traffic between Valentich and the Melbourne Flight Service at Tullamarine. He reported a series of unidentified green lights, and then a strange aircraft hovering above him.

A grinding metal sound was heard before Valentich's radio went dead.

People from King Island and along the southern Victorian coast reported strange, green lights that very night -- but no concrete explanation for Valentich's disappearance has ever surfaced.