We all have our demons: ghosts from our past that haunt us. But for Craig Chester, his ghost is a little different. Craig is an actor, writer, and director based here in L.A. and he seems like a pretty smart, funny, and grounded guy. But a series of events lead him to believe that he was being followed around by the ghost of actor Montgomery Clift. His fascinating and troubling story is the subject of KCRW’s latest episode of “Unfictional.”