Can Sammy and Brian solve a 200-year-old mystery? The journal holds two secrets. As Bird-in-Hand's teenage sleuths investigate the meaning behind the odd mixture of letters and numbers, they receive anonymous notes. Many questions arise. Where is the jeweled necklace? Why did Karen disappear when Scott Boyer arrived in town? For ages 9-13. Book #4 in the "Sammy & Brian Mystery" series. (123pp. Gaslight Pub., 1996.)