Written from a sound evangelical perspective in a manner that does not assume all such phenomenon are either demonic or nonsense.
The spirit realm is real. Some people actually see into this world and how it interacts with the physical reality the rest of us experience. These people can be called Seers.
This site explains and offers advice about this ability (or gift) as well as related supernatural, paranormal, or spiritual phenomena, such as ridding your life and home of dark spiritual forces (spiritual house cleansing). If you are a new visitor, you might want to start here.