“That business about Mrs. Vandemeyer had worried me when Julius told me about it. On the face of it, it seemed that he or Sir James must have done the trick. But I didn’t know which. Finding that photograph in the drawer, after that story of how it had been got from him by Inspector Brown, made me suspect Julius. Then I remembered that it was Sir James who had discovered the false Jane Finn. In the end, I couldn’t make up my mind⁠—and just decided to take no chances either way. I left a note for Julius, in case he was Mr. Brown, saying I was off to the Argentine, and I dropped Sir James’s letter with the offer of the job by the desk so that he would see it was a genuine stunt. Then I wrote my letter to Mr. Carter and rang up Sir James. Taking him into my confidence would be the best thing either way, so I told him everything except where I believed the papers to be hidden. The way he helped me to get on the track of Tuppence and Annette almost disarmed me, but not quite. I kept my mind open between the two of them. And then I got a bogus note from Tuppence⁠—and I knew!”