The Cemetery (1.1.1) involves a scheming wastrel, played with a wonderful villainous zeal by Roddy McDowell, who bumps off his ailing millionaire uncle for the inheritance, only to find his sanity threatened by his uncle's seemingly haunted painting of the nearby family cemetery--a changing canvas which promises a hideous retribution from the grave. (7/10)
Frantic with terror, the evil nephew rips the phantom painting from the wall and stumbles down the staircase, breaking his neck. It turns out that the rich uncle's faithful butler Portifoy (played by Ossie Davis) arranged for an artist to make several copies of the painting which progressively showed the uncle emerging from his grave and coming to the front door. No sooner than Portifoy--who is the old man's alternate heir in case of the nephew's untimely demise, naturally--can drink to his ill-gotten fortune than the painting begins to change for him, this time for real. This strange turn--that the nephews undead vengeance should be genuine while the uncle's had to be fabricated-- deepens the the absurdity of the plot, but I don't suppose I gave that much thought as a kid.
The second and third segments of the Night Gallery pilot are memorable, too, but a little depressing for Halloween viewing, in my opinion. In fact, I'm going to skip ahead to the far superior season 2 for my next pick, which happens to be the four-part first episode: The Boy Who Predicted Earthquakes/Miss Lovecraft Sent Me/The Hand of Borgus Weems/Phantom of What Opera?