Most Haunted has a main presenter, a psychic medium and a parapsychologist. The parapsychologist's role is to be the skeptic, and to give possible scientifical suggestions for the paranormal activity that happens during the night. These are supported by some of the production crew, who appear in the show and generally have some involvement with many parts of the investigation as they are performing their normal crew role. Most of these on-screen crew members also take part in séances.