The Cryptogram

Chetwynde Castle was a large baronial mansion, belonging to the Plantagenet period, and situated in Monmouthshire. It was a grand old place, with dark towers, and turrets, and gloomy walls surmounted with battlements, half of which had long since tumbled down, while the other half seemed tottering to ruin. That menacing ruin was on one side of the structure concealed beneath a growth of ivy, which contrasted the dark green of its leaves with the sombre hue of the ancient stones.