‘That’s rather a long story, but – well, yes, we’re pretty sure. As I said there’s no chance of being able to bring the deed home to anyone – the evidence would be too flimsy. But there’s the other aspect of the case – the one I was speaking about. You see, there were four people who might have done the trick. One’s guilty; but the other three are innocent. And unless the truth is found out, those three are going to remain under the terrible shadow of doubt.’