Horace chose Shotover Grange after a thorough study of the house for two weeks. He was looking at its rooms, its electric wiring, its paths and its garden. It was safe because the family was in London and the two servants, who remained in the Grange had gone to the movie. There was about fifteen thousand pounds worth of jewels in the Grange safe. If he sold them one by one, he expected to get at least five thousand, enough to make him comfortable for another year. There were three very interesting books coming up for sale in the autumn. Now he would get the money he wanted to buy them.
When Horace was about to approach the safe, a lady in red came and announced that she was the owner of the house. Her appearance was such that Horace was fooled. He became eager to please her. She asked him to open a safe for her. With his gloveless hands, he opened the safe. So, his fingerprints were found on the safe and he was arrested after two days.