The Martian Eyes - S3.E10

An odd professor claims he can spot Martians, who masquerade as humans, using a pair of infrared glasses he wears. Only then can you see the third eyeball in the middle of their forehead. He relates his wild theory to a photographer sitting by him in a bar--and the man believes him. While playing around with infrared film, the photographer says he's snapped a shot of a man with three eyes. The two team up to convince authorities of their find.