A Raging Storm — Richard Castle

Days after being brought out of retirement to investigate a kidnapping, Derrick Storm has a dead US senator on his hands, an assassin to track down, and nearly six billion dollars' worth of gold bars--hidden by the Communist Party somewhere in the former USSR--to uncover. Teaming up again with FBI agent April Showers, Storm must talk to Ivan Petrov, a secretive millionaire who has ties to the assassination, coordinates for the gold, and a mole leaking information to the Russian government from within his inner circle. And while the CIA mission is getting heated, it's nothing compared to the growing sexual tension between Storm and Showers...