Puzzle Lady 11 - The Puzzle Lady vs. The Sudoku Lady

It's the battle of the century when Minami, the Sudoku Lady, shows up in
Bakerhaven to meet Cora Felton, the Puzzle Lady, whose sudoku books
have just edged Minami off of the Japanese bestseller list. Before the
rivals have a chance to square off, a killer strikes, and a sudoku
puzzle is found at the scene of the murder. Now it's a fight to the
finish to see who can unmask the killer. The Puzzle Lady is eager to
undo her Japanese counterpart. At least until the poor woman is arrested
for murder and Cora realizes she's accidentally framed her for the
crime. As if that weren't frustrating enough, the publicity of her
arrest drives Minami's sales through the roof! Now it's up to Cora to
clear her rival's name, get her off the bestseller list, and trap the
real killer. Only, she better do it fast, before the cops find out what
Cora did, and she winds up facing more jail time than Minami.