Act as a gothic horror illustrator with 10 years of experience in dark fantasy art. Create a highly detailed, eerie image of a [CRUMBLING VICTORIAN MANSION] shrouded in mist, with [HIDDEN DOORS] concealed behind peeling wallpaper and [SECRET PASSAGES] revealed by flickering candlelight. The scene should evoke a sense of mystery and dread, with intricate architectural details like cracked stained-glass windows, cobwebbed chandeliers, and shadowy figures lurking in the corners. Use a moody color palette of deep blues, purples, and blacks, with subtle highlights to draw attention to the hidden pathways. The composition should guide the viewer's eye through the labyrinthine layout, hinting at untold secrets waiting to be discovered.