"Miss Isabel told me that he had his Colonel's promise." Mr.Rogers slapped his thigh.

"Egad, boy, it seems to me you're the good angel in this business! We'll send down to the Cottage at once." He pulled a dog-whistle from his pocket and blew two shrill calls upon it.

But above the second sounded the Rector's voice in a sharp exclamation, and we spun round in time to see him fling back the door in the corner.

It opened on a lighted room.
I was running towards this door to see what his exclamation might mean when at the other appeared the constable whom Mr.Rogers called "Jim"-- a youngish man, and tall, with a round head set like a button on top of a massive pair of shoulders.
"You whistled for me, sir ?" "I did.

You will not be wanted to keep watch any longer.