A Secret Twilight Portal

I tottered back into the dim parlor, ready to settle down, when—gasp!—a sliver of amber light beamed right through a carved brass keyhole plate on the sideboard drawer! I froze in theatrical suspense, pumpkin wand held aloft. Could it be a hidden peep-chamber into an enchanted nocturnal palace? I crept forward, dropped onto one knee with breathless ceremony, and pressed my wide eye against the cool open aperture. Inside lay a dusty velvet cavern holding a single forgotten porcelain marble that glowed like a tiny full moon! I clutched my little black kettle tight, letting out a melodramatic squeak of absolute triumph at this grand discovery.