The fourth book in the John Stauber and Linda Lavaque Murder Mysteries series.Strange days in Duluth. People were seeing supernatural apparitions - and some of those people had died. But John Stauber, consulting detective for the Police Department, never gave any credence to the idea of ghosts, much less murderous ghosts. Until the night he saw one himself... "There was a blob of...light. Not bright, but a sort of diffused and amorphous glow. It was...