"A Sudoku championship tournament has come to Kate McDonald?s small town in New Hampshire. Now that she's given up her think-tank career to restore the Avondale Puzzle Museum to its former glory, she's thrilled for the opportunity to raise to profile of the museum. But the puzzle world isn't all quiet pencil scribbling. As Katie tries to mediate, intense rivalries are boiling over, the townspeople are facing off against the police, and a big storm is headed toward town. Then the current champion is found dead in a snowbank, and everyone's a suspect. It should be easy to fill in the blanks in this case, Katie thinks, because now all of the suspects are trapped in one place ..."--Cover, p. 4.