He swore it would knock spots out of anything we’d got. Frankly, I thought it was a fairy tale, but I liked the man, and I wanted to oblige old Baer, so I told him to come back. That was four years ago. He used to come back once a year and report progress. I began to believe in the stuff. I went down, and he showed me what it could do. It was terrific. But there was a snag. The stuff was unstable – too easily affected by weather conditions – impossible to store or transport in any quantity. Then he turned up again. He said he had overcome the instability. He walked up and down this very room in a tremendous state of excitement, waving his arms and saying, “Harschite – that is what I have called it! It is my message that I send back to those who have let the devil loose to serve him, and it is such a message that he will hear it and go back to the hell where he belongs!” Then he calmed down a little and said, “There is only one more step – one small, small step – and I will take it any day now. It is the last experiment, and it will not fail. I am so sure of it that I can give you my word. In a week I shall ring you up and tell you that all is well – that the experiment has succeeded.” Well, he did ring me up to say just that. That was on the Tuesday. I was to go down the next day, but on Wednesday morning I was rung up to be told that Harsch was dead.’

‘How?’

‘Found shot – in the church of all places in the world. It seems he used to go down and play the organ – had a key, and used to go in just when he liked. He was living out at a house called Prior’s End with Madoc, the concentrated food man. It was he who rang me up. He said Harsch had supper with them – there’s a sister, Miss Madoc, and a girl secretary – and after that he went out. Madoc said he always did unless the weather was too bad – he liked walking at night. Odd taste, but I daresay it helped him to sleep, poor chap. When he wasn’t back by half-past ten, they didn’t do anything. Of course, it’s easy to say that they should have, but – well, they didn’t. Madoc and his sister went to bed. They said Harsch had a key, and they never thought that anything could have happened to him.’