Lake Dead (2007)

Three sisters, accompanied by friends, venture to their late grandfather's cabin after his gruesome demise, hoping to uncover details about a potential inheritance. What begins as a quest for family secrets quickly spirals into terror when they discover a deranged family has claimed the old man's property as their own. As they navigate the eerie surroundings, the group must confront their worst fears and fight for survival against the twisted residents who lurk in the shadows, transforming their getaway into a nightmare they could never anticipate.