locked the safe, and then used another key on the bunch to lock a drawer in this desk. I had no occasion to go to the safe again till about 12.20, when the Controller's secretary came here with a telegram to be de-coded. The safe was still locked then, but when it was opened the code was gone."
"You had had no occasion to go to the safe in the meantime?"
"None at all. I locked it at 10.20, and I unlocked it two hours later, and that was all."
"You were not in the room the whole of the time, of course?"
"Oh, no. I have told you that at 10.20 I went to the Controller's room, and after that I went out two or three times on one occasion or another. But each time I locked the door of the room."
"Oh, you did? That is important. And you took all your keys with you, I presume?"
"Yes, all. The keys on the bunch I took in my pocket, of course, and the room door key I also took. There are one or two rather important papers on my desk, you see, and anybody from the corridor might come in if the door were left unlocked."
"The lock of the door would be a good deal easier to pick than that of the safe," Hewitt observed, after examining it. "But that would be of no great use with the safe locked. Shortly, then, the facts are
