William Le Queux,
The Seven Secrets
“ He was a born detective, with a keen scent for clues, an ingenuity that was marvellous, and a patience and endurance that were inexhaustible. At Scotland Yard the name of Ambler Jevons had for several years been synonymous with all that is clever and astute in the art of detecting crime.To be a good criminal investigator a man must be born such. He must be physically strong; he must be untiring in his search after truth; he must be able to scent a mystery as a hound does a fox, to follow up the trail with energy unflagging, and seize opportunities without hesitation ”
