About noon at the office, Mr. Keen says "Going out to lunch, Mike?" He says "Oh, I thought I'd grab myself a sandwich, Mr. Keen". Suddenly, there is a knock at the front door. Mike says "Someone's at the door, boss. I'll see who it is". Mike opens the door to see a distraught young lady standing there. She asks "Are you Mr. Keen?" Mike says "No, I'm his partner Mike Clancy. Here's Mr. Keen". He asks "What can I do for you?" She says "Help me, Mr. Keen, I didn't mean to do it. I don't even remember doing it. Please, you've got to save me". Keen asks "Save you from what?" She says "I've just shot a woman to death!" Keen says "Come inside". Mike says "Oh, she looks like she's a bit out of her mind". Keen asks "Who are you?" She says "My name is Helen Taylor". Keen says "And you just killed someone?" She says "Yes, with this gun". Mike says "I'll take charge of that if you don't mind". Mike inspects the gun and says "Two bullets are missing". Helen says "Yes, Mrs. Ellis was shot twice". Keen says "Mrs. Ellis? Is she the woman you killed?" Helen says "Yes". Keen asks "When did this happen?" Helen says "In her home. Oh, Mr. Keen, I just can't understand it. I've never even seen Mrs. Ellis before in my life. What possessed me to take a gun and go to her home to murder her?" Keen says "I'd like to help you if I can. Now, why not tell me the entire story Miss Taylor". She says "Mrs. Taylor. I'm married, Mr. Keen, and that's another thing that horrifies me. This will ruin my husband's life". Keen says "Mike, get the car. I think we ought to go to the scene of the crime immediately". Mike says "Okay, we'll meet you downstairs in five minutes". Keen says "Now, Mrs. Taylor, tell me exactly what happened from the beginning". Helen says "Oh, Mr. Keen, I only know that I found myself with that gun in my hand in Mrs. Ellis's apartment. She was lying on the floor dead". Keen says "And you don't know who she is?" Helen says "Well, her name is familiar, but that's all. I'm sure I've never seen her before".