Abstract: Cyril Hare is the pen name of Alfred Alexander Gordon Clark, a lawyer and judge in England in the first half of the twentieth century. A writer in his spare time, he used his impeccable knowledge of the law to create original detective novels. In his work, the murderers all have a legal motive: their actions are dictated by the desire to be seen to be in the right in the eyes of the law. In Cyril Hare's fiction, the mystery is rooted in a point of law.