Ed and Lorraine Warren

Ed Warren and his wife, Lorraine, have been investigating ghosts and other entities since the 1940s. They were already well-known as investigators and banishers of ghosts, demons, and poltergeists when they were called in to investigate a house in Amityville, New York, that was said to be haunted by the spirits of a murdered family. The story of that haunting became a famous movie, The Amityville Horror.

Some ghost hunters use various kinds of instruments to detect a ghostly presence. The Warrens, however, rely on psychic communication. They claim that Lorraine is able not only to sense a ghost but to communicate with it and, often, banish it. She does this by encouraging it to "go to the light" that represents the afterlife.

The Warrens have published nine books about their investigations, and they founded the New England...