For some time Daunt puzzled over the best way to get hold of his information. Then it occurred to him that so wide-awake an official as an Inspector of Scotland Yard would certainly have foreseen and considered all that he and Lois had discussed. As Cosgrove had not been arrested, there must be some flaw in the case he was trying to make. He decided to see Tanner once more, in the hope of gaining some information.

With a man like Tanner there was nothing to be gained by any but the most direct methods. Daunt could ask for what he wanted, and either get it or be refused, but he felt he could not obtain it by a trick. To try his luck he called at the Yard and inquired for the Inspector.

‘I want to get some information, Mr Tanner,’ he said, when they had conversed for a few moments. ‘I’m going to ask you for it in confidence, but you may not consider it proper to give it to me, and if so, there is of course no more to be said. It’s not directly about the case.’

‘What is it, sir?’

‘It’s this. In going into this matter it has struck me that the nephew, Cosgrove Ponson, had as much to gain by his uncle’s death as the accused. It is obvious that that must have struck you also. I wondered if you would tell me why you acquitted him in your mind?’

‘Now don’t you get astray on that notion, Mr Daunt. It won’t wash. I went into that, and I may tell you for your private information Cosgrove is as innocent as you are.’

‘So I gathered from your action, in the matter, but if you could see your way to give me particulars, I should be greatly obliged. You see, it’s Miss Drew. She’s got it into her head Cosgrove was the man, and I’d like to be able to clear the thing up to her.’

Tanner thought for some moments.

‘I’d like to oblige both you and Miss Drew,’ he said, ‘but I’m not just sure that I ought. However, as you say, it’s not exactly on the case, and if you give me your word to keep the thing to yourself I’ll tell you.’

‘I promise most gratefully.’