Horace Danby was a meticulous planner, but still he faltered. He used to plan his robberies very well. He knew all the details of the Shotover Grange. He knew the time when there would be no one at the house. He even knew the name of the dog in the house. However, he was completely deceived by the lady he met at the house. He was outdone by her. He was taken in by her subtle ways, and did not realize that she herself could have been a thief. On seeing her, he got scared and started begging her to let him go. When she asked him to take out the jewels for her, he readily agreed. He did not feel anything odd in her leaving him, and not getting him arrested. He was only too happy and thankful that he could go. In his hurry, he even overlooked the fact that his fingerprints were left all over the safe. He blindly believed the lady, and thus, in spite of his meticulous planning, he faltered.