“You're right: it didn't seem to matter. The mistake I made was in accepting as a fact that the time of the murder was fixed. To go on, the next thing was that I was given a highly significant piece of information by Miss Warrenby. She told me, the very first time I saw her, that her uncle very rarely sat out of doors. Well, I didn't pay any particular heed to that, because it didn't seem to matter any more than the doctor's evidence. There the corpse was, sitting in the garden, with a bullet through his left temple; and there the cartridge-case was, lying just where you'd expect to find it, supposing Warrenby had been shot while he was on that seat.”
The Inspector sat up. “Are you going to say he wasn't shot in the garden at all?”
“I should think very likely he wasn't,” replied Hemingway coolly. “We'll hope he wasn't, because if we can prove he was actually shot somewhere else we shall have gone a long way to prove he wasn't shot at 7.15 either. He was probably shot an hour earlier. Which brings me to the third bit of seemingly irrelevant information, handed to me last night by old Father Time. Only, what with his daughter and Hobkirk telling me he was soft in his head, beside being Thornden's Public Enemy No. One, and it's standing out a mile that he had a spite against Reg Ditchling—not to mention the ambition he's got to have his picture in the papers on top of that—I'm bound to say I didn't set any store by anything he said. You know, Horace, it begins to look as though it's about time I retired. There doesn't seem to be anything I haven't missed.”
“I was thinking, myself, that there doesn't seem to be anything you have missed,” said the Inspector dryly. “I remember, now that you bring it to my mind, that Miss Warrenby did say that about her uncle's habits, but I shouldn't have, if you hadn't brought it up.”
“If you're going to start handing me bouquets, my lad, I shall know you've got a touch of the sun, and the next thing you'll know is that you're lying in hospital with an ice-pack on your head, or whatever it is they do to sunstroke cases,” said his ungrateful superior. “Besides, you're putting me out. The last bit of information I was handed came from that blonde cook of Warrenby's—which was where I began to pull myself together, because I didn't miss that. And if Warrenby never went out in his slippers, or without his hat, it looks more than ever as though he wasn't killed out of doors.”
“Yes,” agreed Harbottle. “I see all that, but what I don't yet see is the point of it. It seems to me that there isn't any point at all. When you get a murder faked to look as if it was committed some time later than the actual time, it's generally done to give the murderer an alibi. I heard of a case where the shooting was done with a revolver that had a silencer fitted to it, and a few minutes later, when the murderer had established an alibi, a detonator went off, leading everyone to think that was the noise of the shot.”
“I was on that case,” said Hemingway.
“Were you, sir? Then you'll agree it isn't on all fours with this one. For one thing, no detonator makes a noise like a .22 rifle; for another, Miss Warrenby said she heard the sound of the bullet's impact; and for a third, the fake—if it was a fake—was fixed to take place when nobody had an alibi. Nobody, that is, except young Haswell, Miss Dearham, and Miss Patterdale. Well, neither Haswell nor the girl could have committed the murder an hour earlier, because they were both at The Cedars, playing tennis; and Miss Patterdale, I take it, we needn't consider. She's never been in the running. You can say that for anything we know she shot Warrenby at 6.15, or thereabouts; but she certainly didn't fire the shot Miss Warrenby heard, and if she's found out a way of faking the sound of a rifle being fired, and the impact of its bullet, the whole thing timed to go off an hour after it's been set, she must be a master-criminal, instead of a respectable maiden lady without a stain on her character. Yes, and besides all that, the apparatus would have had to have been removed, and disposed of. Aside from the fact that the whole idea of such an apparatus is impossible—”
“You needn't keep on trying to convince me Miss Patterdale didn't do it,” interrupted Hemingway. “And you needn't prove to me that the second shot couldn't have been fired automatically either, because I know that too. Even if such an apparatus were possible, the absence of just one crucial alibi rules it out. The second shot wasn't fired for that purpose. In fact, quite the reverse. It was fired so that you and I should have a nice lot of hot suspects to occupy our minds.”
The Inspector considered, deeply frowning. “Yes,” he acknowledged. “That's possible, I suppose. It certainly narrows the field, if you're right, Chief. If we're to assume that the time of the murder was between 6.00 and 6.30, we're left with Gavin Plenmeller, the Pole, Mr. Haswell, and, I suppose, the Vicar. Well, naturally, the first thing that comes to one's mind is that Plenmeller was absent from The Cedars at that time.”