The Lone Wolf by Louis Joseph Vance

But why? -- he asked himself as he swung his cab aimlessly away -- why that blind rage with which he had welcomed Wertheimer's overtures?

Unquestionably the business of blackmailing was despicable enough; and as a master cracksman, of the highest caste of the criminal world, the Lone Wolf had warrantably treated with scorn and contempt the advances of a pariah like Wertheimer. But in no such spirit had he comprehended the Englishman's meaning, when finally that one came to the point; no cool disdain had coloured his attitude, but in the beginning hot indignation, in the end insensate rage.