When Room Eleven's beloved pet hamster, Patches, goes missing, Smashie and her best friend, Dontel, launch an investigation to bring the thief to justice--but they discover that there may be more than one secret to be uncovered.

When the class hamster goes missing from Room 11 on the same day they have an awful substitute teacher, hamster-phobic student Smashie McPerter and her best friend, Dontel, experience increasing paranoia as every likely suspect produces an alibi.