The Complex (2013) is a Japanese horror movie from the director that made the classic Ring / Ringu (1998).  The protagonist in this story moves into a new home, meets a child in the playground.  After a long time she finds that something bad happened to her neighbor.  After an even longer time, the truth is revealed, but nothing bad really happened during this long wait.  This is a very disappointing effort.  There are too few scares in this movie to be considered a successful horror movie.  As a drama, its story is too simple.  Besides, I dislike major characters doing stupid things in a horror movie.