Viewers are frazzling their brains over this seemingly innocent photograph of a gracefully stretching ballerina — which hides a highly sinister image. [Warning: Spoilers below] The illusion has ...

For Halloween, some makeup artists create optical illusion designs that warrant a double take. A popular method is using body paint to create the effect of negative space — making it appear that body ...

A "creepy" optical illusion has dumbfounded masses, with only the most "clever" able to unravel its mystery. Optical illusions - and similar images that contain a concealed detail - fascinate many ...