Ha, ha! Don't understand that, hey?
Well, you let me in and I'll explain the joke." The captain's reply was calm and deliberate.
"I shouldn't wonder if I understood it," he said.

"Come in.

Don't--" The remainder of the sentence was whispered and the listeners on the sofa could not hear it.

A moment later Captain Cy entered the sitting room, followed by his caller.
The latter was a stranger.

He was a broad-shouldered man of medium height, with a yellowish mustache and brown hair.