Fans of Diane Mott Davidson's Goldy Schulz, the gourmet gumshoe of Aspen Meadow, Colorado, love her modus operandi: "Treat every puzzle with questions and chocolate." In Tough Cookie, Davidson's ninth culinary mystery, Goldy is waiting to reopen her catering business, which has been shut down by the health department for lack of adequate drains. She's got a PBS cooking gig for a few weeks, and... (read more)