Coll 屬於「Wolf」部落。 他與族人居住在一個名為「Construct」（構築體）的巨大科技生物體上，這是一台由全族人的意志力共同驅動的龐然大物。他們成群結隊地在世界上漫遊，與其他部落戰鬥並將其併吞。 然而，當一個全新且危險的 Construct 發起攻擊時，Coll 意外從 Wolf 身上被拋出並落單了。現在，他必須在地表上求生，並設法回到族人身邊。 他在途中獲得了 Rieka 的幫助，她是一名負責維持 Constructs 運作的「Tock」。她承諾會帶 Coll 回去，但她值得信任嗎？而她真正的目的又是什麼……？ 當 Coll 揭開真相時，這一切徹底摧毀了他對部落、對世界、甚至是對自己的所有認知。在一個充滿危險且突然失去意義的世界裡，他還能找到回去的路嗎？ An outstanding, highly original and unputdownable read! This is bold, thought-provoking adventure perfect for fans of MORTAL ENGINES and THE LAST WILD. WINNER of Peters Children’s Book of the Year 2025: Junior Fiction category Coll is Wolf. He lives with his clan on a Construct, a huge technological "creature" driven by the clan's combined willpower. Together they roam their world, fighting other clans and absorbing them into their own. But when a new and dangerous Construct attacks them, Coll is thrown clear from Wolf and left behind. Now he must survive life on ground and get back to his clan. He is helped by Rieka, a "Tock" who makes the Constructs work. She promises Coll a way to return, but can she be trusted? And what is she really trying to do...? When Coll uncovers the truth, it destroys everything he thought he knew about his clan, the world they live in, and even himself. In a world full of danger, and suddenly without meaning, can he find a way back? “I loved every page of this gripping, dystopian thriller.” - Kieran Larwood

受全球現象級解謎書《Murdle》啟發，全新驚險推理系列小說首度登場！ 《Mr. Lemoncello's Library》與《The Swifts》書迷絕對不可錯過的佳作。 這是一個烏雲密布的日子，在「Sacred Kidney」的操場上，小偵探傑克（Jake）卻很喜歡這種氣氛——陰沉且充滿未知。對於傑克來說，對抗壞蛋簡直是小菜一碟，畢竟她可是校內唯一擁有正版偵探徽章的厲害角色。但就在傑克與她的搭檔史特林（Sterling）準備迎戰學校最大的惡霸時，圖書館內突然傳來一聲尖叫！ 孩子們確信那是莎佛倫老師（Miss Saffron）的慘叫聲，但當他們趕到現場時，圖書館卻一如往常：到處都是書，唯獨不見老師的身影！ 留在學校的師長們都守口如瓶，於是傑克、史特林以及惡霸「磚塊」（Brick）決定聯手查出真相。這組不可思議的三人小隊立下「勾勾手」約定，誓言破解這樁發生在Sacred Kidney的謎團！ It’s a cloudy day on the Sacred Kidney playground, but Jake likes it that way—dark and uncertain. For a junior detective like Jake, standing up to bad guys is a piece of cake. After all, she’s the only detective at Sacred Kidney Elementary with a hard-earned badge to her name. But just as Jake and her sidekick Sterling prepare to face off against the biggest bully in school, there’s a scream from inside the library.