Those who retain any memory of the great law cases of fifteen or twenty years back will remember, at least, the title of that extraordinary will case, "Bartley _v._ Bartley and others," which occupied the Probate Court for some weeks on end, and caused an amount of public interest rarely accorded to any but the cases considered in the other division of the same court. The case itself was noted for the large quantity of remarkable and unusual evidence presented by the plaintiff's side--evidence that took the other party completely by surprise, and overthrew their case like a house of cards. The affair will, perhaps, be more readily recalled as the occasion of the sudden rise to eminence, in their profession, of Messrs. Crellan, Hunt, and Crellan, solicitors for the plaintiff--a result due entirely to the wonderful ability shown in this case of building up, apparently out of nothing, a smashing weight of irresistible evidence. That the firm has since maintained--indeed, enhanced--the position it then won for itself, need scarcely be said here; its name is familiar to everybody. But there are not many of the outside public who know that the credit of the whole performance was primarily due to a young clerk in the employ of Messrs. Crellan, who had been given charge of the seemingly desperate task of collecting evidence in the case. This Mr. Martin Hewitt had, however, full credit and reward for his exploit from his firm and from their client, and more than one other firm of lawyers engaged in contentious work made good offers to entice Hewitt to change his employers. Instead of this, however, he determined to work independently for the future, having conceived the idea of making a regular business of doing, on behalf of such clients as might retain him, similar work to that he had just done, with such conspicuous success, for Messrs. Crellan, Hunt, and Crellan. This was the beginning of the private detective business of Martin Hewitt, and his action at that time has been completely justified by the brilliant professional successes he has since achieved. His business has always been conducted in the most private manner, and he has always declined the help of professional assistants, preferring to carry out, himself, such of the many investigations offered him as he could manage. He has always maintained that he has never lost by this policy, since the chance of his refusing a case begets competition for his services, and his fees rise by a natural process. At the same time, no man could know better how to employ casual assistance at the right time.