He told his companion to close the door, and Dave was puzzled to know what this movement could mean.
"I beg your pardon, Captain Passford, and I have no right to ask any question; but I should like to know why you make me open that door two or three times for nothing," said Dave, in the humblest of tones.
"I told you to open it so that I could see if there was anybody at the door.

This is my secret, Dave.

I have twice found Mulgrum at that door while I was talking to the first lieutenant.

He pretended to be cleaning the brass work." "What was he there for?
When a man is as deaf as the foremast of the ship what would he be doing at the door ?" "He was down on his knees, and his ear was not a great way from the keyhole of the door." "But he could not hear anything." "I don't know: that is what I want to find out.

The mission I have for you, Dave, is to watch Mulgrum.