本書是一場需要讀者親自參與的解謎冒險。Joe、Polly 和 Sam 偶然發現一棟被遺棄的古老宅邸，屋內閃爍著奇怪的光，還留下神祕訊息。當他們在鏡子裡看見詭異的身影時，不禁開始懷疑：這裡真的有鬼嗎？透過動腦解開謎題、破解密碼、進行邏輯推理，幫助三位主角找出真相。讀者不只是旁觀者，而是冒險的一分子，每一頁都有新的線索與挑戰。書中搭配漫畫式插圖，節奏輕快，書末附有提示與解答。When Joe, Polly and Sam stumble across an abandoned manor house, with strange, glowing lights, they decide to explore. Soon, they are on the trail of mysterious messages - and then a terrifying ghostly figure appears in a mirror. Could it be real? They'll need all the help you can give them to find out, solving brain-teasers, logic puzzles and curious codes along the way.There are extra clues and answers at the back of the book. Packed full of interactive puzzles and comic-strips, this Usborne classic has been updated and enhanced for a whole new generation of puzzle adventurers.
