"I don't know, why?"
"Well, I missed the key to the wireless room this morning. I didn't say anything about it, thinking probably I'd mislaid it. But I hunted for it every place I could think of and didn't find it, and then after dinner it was back again in its place."
"But he'd hardly dare send in the day time, or even to go into the room."
"No, but he might have taken the key, and then filed one to match it."
"That's so, and it's probably just what he did," Jack agreed.
"Then he probably knows the code."
"Of course. It wouldn't be of much use to him if he didn't."
"You get the key, and let's go take a look and see if there's any evidence that he's been in the room."
"Right. I'll be back in a minute."
But they failed to find anything wrong in the little room which was used for the wireless. They tested the apparatus, and found it all in good order, nor could they find any indication that anyone save themselves had been in the room.