The Cat Who Said Cheese

The Great Food Explo is scheduled to open with a bang, introducing new restaurants, country inns, food specialty shops, and a new food page in the Moose County Something. Unfortunately, before the Explo can get off the ground... a bomb blasts the hotel, killing a housekeeper and causing extensive damage. Enter Qwill, Koko, and Yum Yum with suspicions that the bomb was meant as something stronger than a warning. They set out to investigate a mysterious woman guest at the hotel who disappeared after the bomb exploded and find out why the hotel owner, Gustav Limburger, was suddenly hospitalized. Qwill has moustache-twitching suspicions about the whole affair yet no evidence other than Koko and Yum Yum's new interest in cheese, especially Gruyere, Brie and feta.
Of course, Qwill, Koko, and Yum Yum are on the case, and the killer (or killers?) won't escape Qwill's intuition or the cats' detection skills.