Dementia 13

When her husband John has a heart attack while out in a rowboat on the lake, Louise Haloran throws his body overboard and later tells the family that he has left on an urgent business trip. Her main concern is that she can only inherit a part of the family fortune if if her husband is alive. The Halorans are a strange family, still grieving over the death of the youngest daughter Kathleen who drowned in a pond when she was just a child. They hold an annual ceremony of remembrance every year on the anniversary of her death. This year however, someone is wielding an ax intent on murder.Dementia 13 featuring William Campbell and Luana Anders is streaming with subscription on Prime Video, streaming via tv everywhere with EPIX, free on Popcornflix, and 7 others. It's a horror and mystery movie with a better than average Rotten Tomatoes (critics) score of 68% and an average IMDb audience rating of 5.7 (6,062 votes).