>When a critic gives a thumbs-up to a fall pilot, that’s a pact with the devil. There’s no guarantee future episodes won’t be Satan’s weaker spawn, limping and sniveling. But ABC’s Sunday horror show 666 Park Avenue remains good Gothic trash. The story, about an apartment that gobbles up tenants, is satisfyingly lurid, and there are evil real-estate schemes that would make Donald Trump’s hair fly off like the witch’s broom it is. The one surprise so far is that Vanessa Williams, the wife of sinister building owner Terry O’Quinn, is touchingly vulnerable. When have you ever been scared for her?