Mr Hazell,' he went on to Racksole, 'is one of our outdoor staff--what we call an examining officer.

Just now he is doing night duty.

He has a boat on the river and a couple of men, and the right to board and examine any craft whatever.

What Mr Hazell and his crew don't know about the Thames between here and Gravesend isn't knowledge.' 'Glad to meet you, sir,' said Racksole simply, and they shook hands.
Racksole observed with satisfaction that Mr Hazell was entirely at his ease.
'Now, Hazell,' the high official continued, 'Mr Racksole wants you to help in a little private expedition on the river to-night.

I will give you a night's leave.