“Do you know,” I interrupted, “that Guy Pagett was in Marlow at the date of the murder?”

“That settles it then. I thought he was at Cannes with Sir Eustace.”

“He was supposed to be in Florence—but he certainly never went there. I’m pretty certain he was really in Marlow, but of course I can’t prove it.”

“And to think I never suspected Pagett for a minute until the night he tried to throw you overboard. The man’s a marvellous actor.”

“Yes, isn’t he?”

“That explains why the Mill House was chosen. Pagett could probably get in and out of it unobserved. Of course he made no objection to my accompanying Sir Eustace across in the boat. He didn’t want me laid by the heels immediately. You see, evidently Nadina didn’t bring the jewels with her to the rendezvous as they had counted on her doing. I fancy that Carton really had them and concealed them somewhere on the Kilmorden Castle—that’s where he came in. They hoped that I might have some clue as to where they were hidden. As long as the ‘Colonel’ did not recover the diamonds, he was still in danger—hence his anxiety to get them at all costs. Where the devil Carton hid them—if he did hide them, I don’t know.”

“That’s another story,” I quoted. “My story. And I’m going to tell it you now.”

CHAPTER XXVII

Harry listened attentively whilst I recounted all the events that I have narrated in these pages. The thing that bewildered and astonished him most was to find that all along the diamonds had been in my possession—or rather in Suzanne’s. That was a fact he had never suspected. Of course, after hearing his story, I realized the point of Carton’s little arrangement—or rather Nadina’s, since I had no doubt that it was her brain which had conceived the plan. No surprise tactics executed against her or her husband could result in the seizure of the diamonds. The secret was locked in her own brain, and the “Colonel” was not likely to guess that they had been entrusted to the keeping of an ocean steward!

Harry’s vindication from the old charge of theft seemed assured. It was the other, graver charge that paralyzed all our activities. For, as things stood, he could not come out in the open to prove his case.