 I wanted to reach the bottom steps. Mrs. Wilcox disappeared. I stood over the cartway woman. She was dead. A burst of pistol fire came from the upstairs part of the house. A moment later, Inspector Doyle came tumbling down the stairs. His gun was still in his hand. He was unconscious. I looked up. At the top of the stairs stood Mrs. Laura Wilcox. She said nothing, but calmly came down