The one person who could really be regarded as an eyewitness was the labourer who had jumped straight into the water to save the baby, but even he, still dripping wet and greatly distressed, could say only that he and his wife had been walking beside the canal, and nothing seemed wrong. Then the pram had suddenly come rolling down the slope from the garden, going faster and faster, and tipped upside down as soon as it reached the water. As he thought he had seen a child in the water, he had run down to the bank at once, stripping off his jacket, and tried to rescue it, but he had not been able to make his way through the dense tangles of waterweeds as fast as he had hoped. That was all he knew.
The police superintendent was more and more baffled. He had never known such a puzzling case, he said. He simply could not imagine how that pram could have started rolling. The only possibility seemed to be that the baby might suddenly have sat up, or thrown herself violently to one side, thus unbalancing the lightweight pram. But it was hard to believe that, and he for one couldn’t imagine it. Was there anything else that occurred to any of us?
I automatically glanced at the Limpleys’ housemaid. Our eyes met. We were both thinking the same thing at the same moment. We both knew that the dog hated the child. We knew that he had been seen several times recently slinking around the garden. We knew how he had often head-butted laundry baskets full of washing and sent them into the canal. We both—I saw it from the maid’s pallor and her twitching lips—we both suspected that the sly and now vicious animal, finally seeing a chance to get his revenge, had come out of hiding as soon as we left the baby alone for a few minutes, and had then butted the pram containing his hated rival fiercely and fast, sending it rolling down to the canal, before making his own escape as soundlessly as usual. But we neither of us voiced our suspicions. I knew the mere idea that if he had shot the raving animal after Ponto’s attack, he might have saved his child would drive Limpley mad. And then, in spite of the logic of our thinking, we lacked any solid evidence. Neither the maid nor I, and none of the others, had actually seen the dog slinking around or running away that afternoon. The woodshed where he liked to hide—I looked there at once—was empty, the dry trodden earth of its floor showed no trace at all, we had not heard a note of the furious barking in which Ponto had always triumphantly indulged when he pushed a basket of washing into the canal. So we could not really claim that he had done it. It was more of a cruelly tormenting assumption. Only a justified, a terribly well justified suspicion. But the final, clinching certainty was missing.
And yet I have never since shaken off that dreadful suspicion—on the contrary, it was even more strongly confirmed over the next few days, almost to the point of certainty. A week later—the poor baby had been buried by then, and the Limpleys had left the house because they could not bear the sight of that fateful canal—something happened that affected me deeply. I had been shopping in Bath for a few household items when I suddenly had a shock. Beside the butcher’s van I saw Ponto, of whom I had subconsciously been thinking in all those terrible hours, walking along at his leisure, and at the same moment he saw me. He stopped at once, and so did I. And now something that still weighs on my mind happened; in all the weeks that had passed since his humiliation, I had never seen Ponto looking anything but upset and distressed, and he had avoided any encounter with me, crouching low and turning his eyes away. Now he held his head high and looked at me—I can’t put it any other way—with self-confident indifference. Overnight he had become the proud, arrogant animal of the old days again. He stood in that provocative position for a minute. Then, swaggering and almost dancing across the road