Tray and Carey Lennox are identical twins—one a sophisticated art and antiquities appraiser searching for an obscure artifact for the FBI, the other an outgoing yet down-to-earth Nuclear Regulatory Commission engineer hot on the trail of a nuclear saboteur. Their individual investigations into ruthless power-mongers gain momentum until one fateful day in the Hamptons when one twin is gunned down and the other sacrifices his identity to find his brother’s killer.