North Bay book lovers have cause to celebrate this weekend, as the newest literary event in the area, Bookmark Napa Valley, brings together bestselling authors and great food and wine for an engaging evening that benefits the St. Helena public library. Guests include Cara Black, New York Times bestselling author of the Aimée Leduc mystery series, novelist Laura McBride, SF Chronicle music critic Joel Selvin, and Hampton Sides, author of nonfiction adventure stories including the New York Times bestseller In the Kingdom of Ice. Bookmark Napa Valley takes place on Sunday, Jan. 31, at Charles Krug Winery, 2800 Main St., St. Helena. 5:30pm. $150. 707.307.3706.