William & the Missing Masterpiece

From School Library Journal K-Gr 2Inspired by her own pet, Hancocks here
presents Parisian William, a black and white "cat of mystery," who is called
by a museum when their most famous painting, the Mona Cheesa, is stolen during
National Cheese Week. Putting together clues, like a hole in the baseboard and
a strand of red yarn, William deduces that the lanky stranger who submitted a
mustached Mona Cheesa in the art contest (with a prize of a year's worth of
cheese) is actually a tower of mice in a trench coat.