Double faces: Because all good things come in pairs.
1. An illustrated double portrait (from here)
2. A ghostly double take, by Van Den Berge
3. ‘The Duplicity Theory of Vision’, from here
4. Simone and Harriet: A double photo-portrait. (By me)
And lastly! Before you go, please click here! It’s the unofficial 6th image (and, believe me, it’s a good one).