HOLMLOCK SHEARS IS a man ... of the sort one meets every day. He is about fifty years of age and looks like a decent City clerk who has spent his life keeping books at a desk. He has nothing to distinguish him from the ordinary respectable Londoner, with his clean-shaven face and his somewhat heavy appearance, nothing except his terribly keen, bright, penetrating eyes. And then, of course, he is Holmlock Shears, that is to say, a sort of miracle of intuition, of insight, of perspicacity, of shrewdness. It is as though nature had amused herself by taking the two most extraordinary types of detective that fiction had invented, Poe's Dupin and Gaboriau's Lecoq, in order to build up one in her own fashion, more extraordinary yet and more unreal. And, upon my word, any one hearing of the adven