"My room's at the back, as you know; do you mind keeping a look-out while I go round and get into my pyjamas?"
"No, I don't mind."
"Particularly on the store, you know."
"Yes, I know."
"If anything happens come straight to me, but as quietly as possible."
"Very well."
"I mean if you see anybody."
"Yes."
"But I shan't be many minutes."
And he was gone.