"Ah!" said thec sergeant deeply.
"Quite. I thought it possible that he might manage to get hold of a clue to the will's hiding-place, but my chief object in putting him at the manor was to have someone watching Fountain's movements. It seemed to me that it could only be a matter of time before Fountain discovered who was living at Ivy Cottage, and when he knew that, anything might happen. On this same visit to town I visited the Times office to look through the back numbers for a notice of your father's death, Shirley. That represents the only occasion in my memory when you've let me down, Aunt Marion. Your recollection of dates is lamentable. He died five years ago, not three."
"Tiresome for you, dear boy," agreed Lady Matthews.
"It was. However, I found the notice at last and took down the address in Johannesburg. Then I sent a cable to a firm of inquiry agents there to ascertain whether he left any issue, and if so what became of the issue. To speed things up a little I also employed a private detective agency in London to trace the records of Mark and Shirley Brown."
"When I got back to Greythorne I found you there, Anthony. You gave me, though reluctantly, a valuable piece of information. You divulged that Fountain had received a letter from a firm of private detectives and that it had very much upset him. That could only mean one thing he was trying to discover what offspring his cousin had left and where they were. The fact that he was upset seemed to point to him knowing that both Mark and Shirley Fountain were actually at his gates. You told me next day that he had had a row with Collins. I imagine he had jumped to the conclusion that Collins was double-crossing him. Things were beginning to move rather quickly, and the devil was in it that while Collins still held that vital portion of the will it was extraordinarily hard to take any sort of action."
"Putting in a little detective work on my own I came to call on you, Shirley. That was a lucky coincidence. You, believing that Collins now possessed the entire will, had determined to try and buy him over and had sent for him to come and see you. He came because he thought that you held Dawson's half and might destroy his little game. I saw him leave Ivy Cottage. I imagine you must both have fenced very skilfully on that occasion, since neither of you was aware at the end of the interview that the other was not, after all, in possession of the missing half."
She smiled ruefully. "We did. We didn't even mention the word will."
"I should have loved to hear you," he remarked. "When Collins had left the cottage I entered it. You may possibly recall that I told you I had come for a piece of information which I managed to get. I ascertained that you had been in South Africa. Your kaross of King Jackal skins and your brother's artless conversation told me that. It was not proof, but good enough to go on with.
"The next move in the game was made by Fountain who rang up to ask me to go over to see him. He had all along been keeping a weather-eye cocked in my direction. He was nervous, and like most people in that condition he couldn't leave well alone. He had to try and put me off the scent. Between them he and Collins hatched up an extremely improbable story about Dawson to account for the butler's inexplicable wealth. It had its uses: I was able to hand it to the inspector to investigate. He liked it very much, and it gave him a little harmless occupation.
"While I was at the manor a disturbance occurred. Mark Fountain, under the influence of drink, came to the house with a hazy idea of forcing Collins to disgorge the will by threatening to shoot him. It was very awkward for Collins."
"Good Lord, was that why he kept on urging Basil to let the kid go?" demanded Corkran.
"Yes, that was why. And since Fountain, who didn't know Mark from Adam, had every intention of sending for the police, Collins was compelled to divulge his identity. If you remember, he used the words: "The young gentleman from Ivy Cottage," which instantly enlightened Fountain. That incident looked as though I was right in my theory about his letter from the detective agency. In fact, it was all fitting in very nicely. But Mark's idiotic conduct was a serious complication. I can't say that I actually expected Fountain to make an attempt on his life: I had no reason to suppose that he was the type to commit a murder; but it was a possibility one couldn't ignore. I had him watched, not in the least unobtrusively. I regret to say that I thought the mere knowledge that the boy was being shadowed would be enough to choke Fountainoff. He certainly wasn't pleased about it, but he wasnt as easily baulked as I'd expected him to be. I paid a visit to the manor just to let him know that I had put a man on to Mark. Incidentally I saw that Peterson was safely installed."
"'That evening I received the answer to my cable to Johannesburg. There was now no longer any doubt about your identity, Shirley, and I thought it well to pay a visit to Sergeant Gubbins to get him to tighten up the watch on Mark. Unfortunately I was too late. While I was at the police station the news of Mark's death came through." He paused and looked down at Shirley. "I'm sorry if this distresses you. I have something to say about it."
"Go on," she replied curtly.
"Mark," said Amberley, "did not fall into the river because he was drunk. He was drunk, of course very drunk — but he was pushed in. Being drunk, he drowned. It was a murder planned so cleverly that I doubt whether it could ever have been brought home to Fountain. Mark's habits were a byword in Upper Nettlefold; several persons had wondered aloud how it was that he hadn't stumbled into the river long since. It is also a wellknown fact that at this season of the year the mist that lies over the Weald after dark is nearly always pretty thick in that hollow where the road runs beside the Nettle. Fountain trusted to luck - or perhaps knew—- that Tucker would not be following Mark particularly closely. For Mark's death Inspector Fraser was indirectly responsible. He gave Tucker to understand that he was being put on to that job merely to humour a whim of mine."
The sergeant coughed. "Be making a report, sir?"
"I shall, Sergeant, but don't interrupt. Fountain gave out that he was going to London that afternoon. He probably did go. If he hadn't had any luck in what he meant to do I have no doubt that he would have repeated the manoeuvre next day. But he had luck. It all turned out as he had expected. He left his car probably in one of the lanes leading on to the main road and lay in wait for Mark beside the river where the fog was thickest. When Mark appeared he had only to push him over the bank. I don't suppose it required much strength, and in any case Fountain was a very powerful man. The river is fairly deep; Mark drowned, being too drunk to make any effort to save himself."
"Yes, but supposing he hadn't drowned?" objected Anthony.
"That would have been annoying for Fountain, of course, but not dangerous. If the boy had said that someone pushed him in, who would have believed him?"
"You would," said Anthony.
"Possibly, but although Fountain was suspicious of me he never knew how much I'd found out. No, the thing was safe enough - and it worked. Had the mist been less thick, had Collins not lost sight, temporarily, of Mark, it would not have worked. But Collins was too late to save the boy's life, though there is no doubt that he putt forth superhuman efforts to do so. From the moment that Fountain learned of his cousins' presence in Upper Nettlefold Collins was on the watch. He knew Fountain better than I did. His story about the cigarette case, Sergeant, was quite untrue, but I daresay Miss Fountain would have confirmed it, wouldn't you, Shirley?"
She nodded. "I was completely in his power. If he had the will, I dared not give him away. That was partly why I didnt confide in you. He suspected you from the start of knowing much more than the police."
"And therefore it was unsafe to confide in me lest I should betray my knowledge? Many thanks. Now, on the day following the murder Fountain came to call on me at Greythorne. Ostensibly his object was to inquire into Collins' presence on the scene. Actually he came to discover, if he could, what I was thinking and whether you, Shirley, were remaining at Ivy Cottage. I gave him to understand that I suspected Collins and also that you were rernaining at the cottage. Since he had eliminated Mark I expected him to make an attempt on you next, and my plan was to catch him in the act and arrest both him and Collins on two separate charges. I should have been able to do that very successfully had it not been for the well-meaning but disastrous zeal of Corkran. When I took you to the cottage to collect your things, Shirley, I unbolted the back door and appropriated the key. Having desposited you at the Boar's Head I motored back to Greythorne and rang up Peterson, telling him to keep an eye on Fountain and let me know if he left the house that night. You came into the room in the middle of that conversation, Felicity, and remarked that I had sweet telephone manners. Do you remember? Peterson rang me up just after midnight to say that Fountain had left the house and gone off on a push-bike. I then got on to you, Sergeant, and we drove to Ivy Cottage to await his arrival. Then, when things were panning out almost miraculously well, Corkran gave the alarm and Fountain escaped by the back door. You were rather fed up with me for letting him go, weren't you? To have stopped him would have been sheer folly. I couldn't prove a thing against him except that he had broken into a strange house. It had its amusing side, of course. Not only did you follow him, but Peterson, having caught sight of you pedalling down the drive, followed you both. Unnecessary but equally zealous. He didn't recognise you, and fearing that I might be surprised by two criminals instead of one, came along to lend a hand. I saw him when I went to bolt the back door, and he was ust going to come and speak to me when he caught sight of you, Anthony, and tactfully beat a retreat. "That was Fountain's first attempt to murder Shirley. It is my belief that he meant it to look like suicide - the reason being Mark's death. Not a bad idea. But I gave you a clue, Sergeant, and I think - I really think you ought to have guessed a little more than you did. I pointed out to you that whoever broke into the cottage evidently did not know that Miss Fountain owned a bull terrier. Collins did know that, for he had been to the place before. I am sad, Sergeant; sad and disillusioned."