Dementia 13

Set in a spooky Irish castle, DEMENTIA 13 begins as the Haloran family gathers to memorialize the death of the youngest sister, Kathleen. While various family members plot and connive, an ax murderer is roaming the grounds, and Kathleen's body shows up at just the wrong time. Slowly, the family members become increasingly suspicious of each other--as well as of the ghosts that haunt the castle. But when the sinister family doctor is called in to help with the mystery, the expertly contrived Coppola chills really take hold. (official distributor synopsis)