One Step Beyond - Season 2 - Episode 38 - Goodbye Grandpa

A brother and sister are devastated by the death of their grandfather, to whom they were inordinately close. However, they soon begin to suspect that he may be trying to contact them from beyond the grave.
Director: John Newland, Axel Gruenberg, Jack Hively
Starring: John Newland, Robert Douglas, Olan Soule, Will J. White, Francis De Sales, Rudolph Anders