在北方的某個寒冷國度，主角「我」隸屬於一間私人醫療機構，他們世代培養醫生，試圖控制世界上所有醫療體系，致力於保護人類受到恐怖疫病的危害，但一名醫生卻在服務的地點離奇自殺，於是他被派到寒冷的北方，來到一座高聳入雲、被刺骨寒風包圍的高山城堡裡，調查城堡主人維爾帝拉伯爵的私人醫生之死，但他卻意外發現，背後有另一股勢力正與他們暗中抗衡…而更多黑暗的秘密尚未被揭穿。描述細膩精準，氣氛掌握得宜，在詭譎幽魅的城堡中，死亡與陰謀都蠢蠢欲動。 In an isolated chateau, as far north as north goes, the baron’s doctor has died. The Interprovincial Medical Institute sends out a replacement. But when the new physician investigates the cause of death, which appears to be suicide, there’s a mystery to solve. It seems the good doctor was hosting a parasite. Yet this should have been impossible, as the physician was already possessed – by the Institute.