Sins and Needles (Needlecraft Mystery Series #10)

Owner of the Crewel World needlework shop and part-time sleuth, Betsy Devonshire must help clear Jan Henderson's name when her wealthy aunt is found dead, courtesy of a double-zero knitting needle. Just like the kind Jan knits with. And an embroidered map of Lake Minnetonka, found among the aunt's effects, could lead Betsy to a buried treasure-or to a secret that someone would kill to keep buried.