The new thriller in the 1 New York Timesbestselling Isaac Bell series from grand master of adventure Clive Cussler. As Van Dorn private detective Isaac Bell strives to land a government contract to investigate John D. Rockefellers 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 Bells best witness, a brave and likable man. Then the shooter detonates a terrible explosion that sets the victims independent refinery ablaze.Bell summons his best detectives to scour the site of the crime for evidence. Who is the assassin and for whom did he kill? But the murders—shootings, poisonings, staged accidents—have just begun as Bell tracks his phantom-like criminal adversary from the oil fever regions of Kansas and Texas to Washington, D.