The bucolic image of central Massachusetts belies a dark and sometimes deadly past. Grisly crimes and grim misdeeds reach back to colonial settlement in Worcester County, from an escaped slave hanged for rape in 1768 at the Worcester jail to the Sutton choir singer convicted of drowning his wife in 1935. Henry Hammond's 1899 suicide and the others that followed shook Spencer residents to their cores. Some crimes still grip the imaginations of residents,...