himself inside when she opened the door? Was he a lover, a relative, a double-glazing salesman? We need to find out.â
âDid Mrs White see or hear Helen Yardley open her front door?â someone asked.
âShe thinks she might have, but sheâs not sure,â said Proust. âNow, at number 11 Bengeo Street weâve got eighty-three-year-old Beryl Murie, who, in spite of her partial deafness, heard a loud noise at 5 p.m. that might well have been a gunshot. She said it sounded like a firework, which is an easy mistake to make if youâre unfamiliar with the sound of an M9 Beretta 9 millimetre being discharged, as I think we can safely assume most retired piano teachers are. Miss Murie was able to be precise about the time because she was listening to the radio and the five oâclock news had just started when she heard the loud noise. She said it startled her. She also said it sounded as if it had come from Helen Yardleyâs house. So, assuming weâve got a man entering the house at 8.20 a.m. and the fatal shot fired at 5 p.m., whatâs happening in between? We canât assume the man Mrs White saw is the killer, but until we track him down and find out for certain, we have to consider the possibility that he might be. Sergeant Kombothekra?â
âStill no joy, sir,â Sam called out from the back of the room.
Proust nodded grimly. âIf another day passes and we havenât found and eliminated Mr Morning Visitor, Iâll put my money on him being our man. If he is, and he was in Helen Yardleyâs house with her for more than eight hours before he shot her, what was happening during those hours? Why not shoot her straight away? She wasnât raped or tortured. Apart from being shot in the back of the head, she wasnât injured. So, did he go there to talk to her, thinking he might or might not shoot her, depending on the outcome of the conversation?â
Simon raised his hand. After a few seconds of pretending not to see it, Proust nodded at him.
âDonât we also have to consider the possibility that the gun belonged to the Yardleys? We canât assume the man brought it with him. It might already have been in the house. Given the Yardleysâ historyââ
âThe Yardleys have no history of illegally possessing firearms,â the Snowman cut him off. âThereâs a thin line between exploring all reasonable avenues of possibility and squandering our resources on tosh that, in our desire to be egalitarian, weâve elevated to the status of hypothesis. Everyone in this room needs to bear that in mind. Weâre forty-eight hours into this investigation and weâre without a suspect â you all know what that means. Weâve already alibied and eliminated Helen Yardleyâs friends, family and close acquaintances. This is shaping up to be a stranger murder, which, for us, is about as bad as it gets, and all the more reason to channel our efforts in the right direction.â
âYou were right to raise it,â Sam muttered to Simon. âBetter for us to focus on it and dismiss it than not to think of it at all.â
âPaul Yardley returned from work at 6.10 p.m., found his wifeâs body and phoned the police,â said Proust. âHe found no one else in the house and neither did the first officers to the scene. Some time between 5 and 6.10 p.m., the killer left 9 Bengeo Street. Someone must have seen him. You know what that means: house-to-house is top priority, and letâs extend it. Someone come up with a new mile-radius.â
The Snowman walked over to the board where the enlarged crime scene photographs were displayed. âHereâs the input wound,â he said, pointing at a picture of the back of Helen Yardleyâs head. âLook at the scorch marks. The gun was so close it might even have been touching her. From the position of the body, itâs a strong possibility that she