Here are three stories for the thrill-seeking page turners. In The Descent by Tim Johnston, an 18 year old girl disappears without a trace on a family vacation in the Rockies.  In Leaving Berlin by Joseph Kanon, a German-American Jew makes a desperate bargain with the fledgling CIA.  To avoid repatriation, he agrees to return to his homeland as a spy in postwar Berlin . And in The Assassin by Clive Cussler, detective Isaac Bell’s case against Standard Oil takes a deadly turn when one of his witnesses is killed.  Series mystery readers, meanwhile have two new offerings to choose from.  In Hush, Hush by Laura Lippman, Tess Monaghan faces a disturbing case involving murder and a manipulative mother, while in A Fine Summer’s Day by Charles Todd, Inspector Ian Rutledge takes on a perplexing case before the outbreak of World War I.