P.K. Simonds

A doctor and a mortician have teamed up to do re-animation experiments on corpses using gangster money loaned for "remodeling." When they can't pay it back, the Mafia guy sends his nephews to work at the funeral home to keep a watch on the debtors, but the nephews end up helping in the search for new bodies, and mayhem ensues when some undesirable types are re-animated. (imdb)

A newlywed with the ability to communicate with the earthbound spirits of the recently deceased overcomes skepticism and doubt to help send their important messages to the living and allow the dead to pass on to the other side.