Watch Dark Water

In this Japanese film, a mother and her young daughter move into a shabby apartment building where strange things start to occur. There is a leaky ceiling in their unit that the janitor won't fix, a child's book bag constantly appears out of nowhere, and from time to time they catch sight of an unsettling little girl. The mother is discouraged from moving out since she is in the middle of a divorce, and for custody reasons, needs to show she's providing a stable environment. Then the leak gets worse and the sightings of the mysterious little girl more disturbing.