If I recall this episode correctly, Professor Payne asks Melinda to mentor a young lady who is herself being haunted. I think I have that right. Of course, the sinister-looking ghost hovering around the gal turns out to be something other than we think. This show often seems to be about not judging a book by its cover. And while we're at it, let me say a few words about the professor. When Jay Mohr was first introduced to the series, I thought this will be the ruination of the show. I was wrong. Mohr has brought an added touch of comedy and pathos to the series, which could easily have stagnated without his character. He is the polar opposite of Melinda's stony-faced, even-tempered husband. This episode is a strong one for Mohr.