Patrolman Dave Whitley is transferred to "Department G", a secret police squad fighting a race of hideous and man-eating underground monsters terrorizing the subway.; The boy Melvin seems to have an imaginary friend. When psychiatrist Drew investigates he learns that Melvin is in contact with the ghost of a suicidal woman.; A fake "Swami" rips off old ladies at seances. When his partner dies in an accident, the swami actually sees his ghost.; A traveller gets into trouble presenting an envelope with a piece of paper. No one knows the meaning of the words written there, but they infuriate any reader.; A man dying on the operating table dreams about a coffin he has to find.