The Haunting in Connecticut
Virgina Madsen, Elias Koteas, Kyle Gallner, Martin Donovan
Plot:
After a family is forced to relocate for their son's health, they begin experiencing supernatural behavior in their new home, which turns out to be a former mortuary.
It says it's based on a true story, but I googled it and the supposed family in which it's based, their claims cannot be proved, so for the sake of being sued, IMO, they give credit to the story idea coming from the supposed real family in which it's based.