The Clue of the Silver Key by Edgar Wallace

SUREFOOT SMITH WAS one of those individuals who never seem to do any work. He was to be seen at odd hours of the day, and sometimes in odd places of the West End. It seemed that he was able to dispense with sleep, for you were as likely to meet him at four o'clock in the morning as at four o'clock in the afternoon.

He had a villa at Streatham.