"As a weaver of mysteries, Mr. William Le Queux has surely no equal. To dash about Europe in his company, hot on the heels of an enigma, is a pastime both exciting and exhilarating."—Johannesburg Star.
AMERICA.
"Mr. William Le Queux's popularity is steadily increasing. No writer has brought mystery and adventure to such a high degree of art. He never fails to enthral and entertain us."—New York Herald.
"Mr. William Le Queux's work is always excellent, and always exciting."—San Francisco Examiner.
"Not without good cause has Mr. Le Queux earned his very apt title, 'The Master of Mystery.'"—El Diario (Buenos Ayres).
AUSTRALIA.
"Mr. Le Queux is always fresh and original, and one can rely on being interested and amused by his stories."—Sydney Morning Herald.
"For mystery and sensation Mr. Le Queux cannot be beaten."—Melbourne Argus.
"Mr. Le Queux's large public are never satisfied. They always crave for more from his pen."—Christchurch Weekly Press (New Zealand).