What Lies Beneath is a 2000 American supernatural -thriller film directed by Robert Zemeckis. It stars veteran actors Harrison Ford and Michelle Pfeiffer as a well-to-do couple who experience a strange haunting that uncovers secrets about their past.
Claire Spencer with her husband, renowned scientist Dr. Norman Spencer after a car accident . . Overhearing Mary Feur sobbing one day, Claire becomes concerned. When she sees Mary's husband Warren seemingly dragging a bag in the middle of the night, she suspects that Mary has been murdered. Claire decides to investigate by taking a basket of flowers and wine to the house as a gift. After nobody answers the door, she walks around the side of the house and discovers a woman's sandal with a dark stain on it. She steals the sandal as evidence. Back on the doorstep, she is surprised by Warren, whose surly behavior further arouses her suspicion. Claire soon begins spying on Warren . Claire becomes convinced that Mary is dead and haunting her. Desperate for closure, and facing little sympathy from Norman, Claire invites Jody to join in her bathroom, where she seems to be able to communicate with Mary's ghost. Claire produces the sandal for the ritual; after it starts, the dial on the Ouija board starts to move slowly from "M" to "F". However, the séance is cut short after being interrupted by the Spencers' Claire and Jody initially assume the séance has been a nonsensical exercise; however, after Jody leaves, Claire returns to the bathroom to find the tub filled. After again seeing the reflection in the bathwater, Claire asks the ghosts what it wants. It replies with a message on a clouded mirror: "YOU KNOW".