The Haunting

"The Haunting," released in 1999, follows a group of people who are invited to participate in a sleep study at a mysterious mansion with a dark history. As they explore the creepy house, they realize they are not alone and must confront the supernatural entities haunting the estate. The central conflict revolves around the characters trying to survive the terrifying and malevolent forces within the house. The main characters must uncover the secrets of the mansion to escape its sinister grip.