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Beadle's New York Dime Library, No. 899
This 1896 dime novel serial by W. E. Manning features Detective Alexander Leland, nicknamed "The Double-Quick Detective," and his dissolute younger brother Theodore. Alexander encounters Theodore drunk on a street corner and tries to dissuade him from confronting Elias Warrington, a man both brothers believe stole their father's fortune twelve years earlier. Though Theodore initially resolves to demand restitution that very night, Alexander appeals to brotherly loyalty, fearing public scandal would damage his detective career. Theodore reluctantly agrees to abandon his plan. However, shortly after the brothers part, Alexander finds himself near Warrington's residence and glimpses Theodore fleeing at a run while hearing cries of alarm from Warrington's house, suggesting foul play has occurred despite Theodore's promise.