Detective Isaac Bell tracks a killer across the nation's oilfields in this adventure in the #1 New York Times-bestselling historical series. As Van Dorn private detective Isaac Bell strives to land a government contract to investigate John D. Rockefeller's Standard Oil monopoly, the case takes a deadly turn. A sniper begins murdering opponents of Standard Oil, and soon the assassin-shooting with extraordinary accuracy at seemingly impossible long range-kills Bell's best witness. Then the shoo