Secretive FBI probe seeks records on premier Napa Valley wineries
St. Helena, Calif. — Highway 29 winds along the floor of the Napa Valley through Yountville and St. Helena and up into Calistoga, passing by vineyards that produce some of the most celebrated and expensive wines in the world.The road, lined with rows of grapevines planted along sun-dappled hills, is justly famous for its stunning beauty — and the stunning number of Michelin-rated restaurants, spas and boutique inns that have popped up among the vineyards.And lately, for locals anyway, it is also the source of a…