Psychics who communicate with the dead are called psychic mediums. (mindbodygreen.com)
It starts off promisingly with a pre-Passion of the Christ Jim Caviezel discovering in 1999 that he can somehow communicate with his dead father (Dennis Quaid) via ham radio. (scifimoviepage.com)
I'm the sole leader of a profitable organization, who regularly pretends to communicate with our dead leader, to give fake hope to my millions of followers. (religion.blogs.cnn.com)