The art of detection, in common with every other art, produces from time to time a genius; and a genius, whatever else he may be, emphatically is not a person having "an infinite capacity for taking pains." Such masters of criminology as Alphonse Bertillon or his famous compatriot, Victor Lemage, whose resignation so recently had stirred the wide world to wonder—achieve their results by painstaking labours, yes, but all those labours would be more or less futile without that elusive element of inspiration, intuition, luck—call it what you will—which constitutes genius, which alone distinguishes such men from the other capable plodders about them. A brief retrospective survey of the surprising results achieved by Dr. Lepardo within the space of an hour will show these to have been due to brilliant imagination, deep knowledge of human nature, foresight, unusual mental activity, and—that other capacity so hard to define.

Dr. Lepardo was studying the following paragraph marked by Miss Maitland:

For Sale.—Entire furniture, antique, of large flat, comprising pieces by Sheraton, Chippendale, Boule, etc. Paintings by Greuze, Murillo, Van Dyck, also modern masters. Pottery, Chinese, Sèvres, old English, etc. A collection of 500 pieces of early pewter, etc., etc., etc. The whole valued at over £30,000.

The torpedo-like car had dropped him at Bedford Court Mansions, and, shuffling up the steps into the hall, he addressed himself to the porter.

"Ah, my friend, has the Count de Guise gone out again?"

"I have not seen him go out, sir."

"Not since you saw him come in?"

"Not since then, sir—no."

"About half-past seven he came in, I think? Yes, about half-past."

"Quite right, sir."