Bokushin No Kage / Original Title: PANIC (Chikuma Bunko)

[Machine Translation] Ariston was awakened in the middle of the night by the sound of the telephone. It was an extension call informing him of the sudden death of his uncle Felix. The cause of death was ruled as a heart attack, but a colonel from the Army Intelligence Department who visited him the next morning told him that his uncle had been developing battlefield codes for the army. After that, suspicious events occur one after another around Aliston, who has started to live alone in a cottage in the remote mountains.... This is a masterpiece of McCloy's mature period, combining the mystery of the code with suspense.

深夜、電話の音でアリスンは目が覚めた。それは伯父フェリックスの急死を知らせる内線電話だった。死因は心臓発作とされたが、翌朝訪れた陸軍情報部の大佐は、伯父が軍のために戦地用暗号を開発していたと言う。その後、人里離れた山中のコテージで一人暮しを始めたアリスンの周囲で次々に怪しい出来事が...。暗号の謎とサスペンスが融合したマクロイ円熟期の傑作。