Poster

At the end of the first film, a poster with Nicole's picture as dissappeared appears.
Jess' brother find a poster of him in the same place. Who put it there? That many posters... people dissappear there everyday and people find that place to put the posters without dissappearing themselves?

People dissappeared have no relationship betweem them. Then how their families design the same type of posters? The same type of letter, the same distribution of text/pictures...