The Beacon (2009)

While trying to get their lives back on track after the loss of their four year old son, Bryn and Paul Shaw move to the charming old Beacon Apartments. Bryn begins seeing a ghostly little boy skulking around the building. With the help of an eccentric young professor and a tough old beat cop, Bryn tries to uncover the details of the boy's death. She hopes that freeing the child will allow him to carry a message to her son. Too late she realizes a second malevolent entity stalks the halls of the Beacon: one that doesn't want the boy to escape.