 In response to Davyjoe's comment-I'm pretty sure it was Donald Buka playing the possessed, lovesick brother.  Leon Janney was one of the hospital doctors and Anton Aszerak (sp?). It is a GREAT episode and REALLY SCARED me the first time I heard it. Unfortunately, I listened to it right before I went to bed that night,and I didn't sleep too well that night!   Davy Joe you are spot-on about it being more terrifying than the dreck that passes for horror movies today.