Though reviled for more than a century as Wall Street's greatest villain, Jay Gould was in fact its most original creative genius. Gould was the robber baron's robber baron, the most astute financial and business strategist of his time and also the most widely hated. In Dark Genius of Wall Street, acclaimed biographer Edward J. Renehan, Jr., combines lively anecdotes with the rich social tapestry of the Gilded Age to paint the portrait of the most talented financial buccaneer of his generation -- and one of the inventors of modern business.