‘Mr Ponson, as reasonable men we must both see that you were interested. You will forgive me—I don’t wish to be offensive—but it is common knowledge that you are in low water financially, and that you benefit considerably under the will.’
‘Good Heavens!’ Ponson cried angrily, ‘and do you actually mean to say you suspect me of murdering Sir William?’
‘I mean nothing of the kind, Mr Ponson. I only want to justify myself in asking you the question to which you have just objected.’
Cosgrove did not reply. At last Tanner went on in a courteous tone:
‘Obviously, I cannot force you to answer me, Mr Ponson. But it must be clear to you that should you decline you may raise suspicions which, no matter how unfounded, are bound to be unpleasant. Please don’t think I am speaking threateningly. You can see the matter as clearly as I.’
The Inspector’s moderation appeared to bring Cosgrove, to a decision. He moved nervously, and then replied:
‘I suppose you are right, Inspector, and that I have no cause to resent your inquiries. I haven’t the slightest objection to telling you where I was when you explain yourself as you have just done.’
‘I am much obliged. It will save me a lot of trouble.’
Cosgrove settled himself more comfortably in his arm-chair.
‘I remember that Wednesday night,’ he began, ‘for I did one of the silliest things that night that I have ever been guilty of, and I think I may say without bragging I am usually as wide awake as most people. But I shall tell you.