He had no son of his own. He had risen from small beginnings, and he wanted to see the boy exhibit some of his own violent energy. And do you think Driscoll didn't know that? Ha!' said the doctor, snorting. `Of course he did. The old man might squeeze the purse strings tighter than a slip knot.' But: Driscoll knew he was the old man's favourite. And when it came to the last. I rather suspect Driscoll figured conspicuously in the old man's will Didn't he, General Mason?'

`I happen to know,' the General said, rather guardedly, `that he wasn't forgotten.'

`So, Hadley, are you really mad enough to think the; boy would have endangered all that? Why, that manuscript was literally Bitton's most cherished possession. You saw how he gloated. If Driscoll had stolen it, and he ever had the faintest suspicion Driscoll had stolen it, out the boy would have gone for ever. You know Bitton's temper and, above all, his stubbornness. And what had Driscoll to gain? At most a few pounds from Arbor. Why should Arbor, a good man of business, give money to a thief for his own property? He would simply smile in that mincing way of his. "A thousand guilders? Come, take fifty! Or I might tell your uncle where you got this manuscript." — No, Hadley. The last thing in the world Driscoll would have done would have been to dare steal it. The person he feared most, I tell you, was his uncle.'

Hadley nodded thoughtfully

'Yes. Yes,' he said, `that's true. But why are you so aggressive on the point?'

Dr Fell sighed. He was very much relieved.

`Because, if you understand that, you're half-way, along the right track. I..' Wearily he raised his eyes to the door at another of the inevitable knocks. He went on vigorously: `But I was going to say that I absolutely refuse to listen to another witness this afternoon. It's past six and the pubs are open.'

A very tired looking Sergeant Betts entered.

`I've just been talking to the other visitors, sir,' he said to Hadley. `And I'm afraid it's been a long job. They all wanted to talk, and I had to listen for fear of missing something. But not one of them knew anything whatever, so I let them go Was that correct sir?'

`Yes. But keep those names and addresses in case you need them.' Wearily Hadley passed a hand over his eyes. He hesitated, and then looked at his watch. `'H'm. Well, it's getting late, sergeant, and we'll run along. I'll take charge of these articles on the table.'