Anna and her brother, Tom, have always wanted a pet. Finally, after their latest pestering campaign, their mother gives in and lets them choose a pair of hamsters from the local pet shop. But their happiness soon turns to horror when the hamsters are found mysteriously dead in their cage. Anna and Tom launch a full-scale investigation to determine who—or what—is behind the hamster homicides. Can they solve the case of the Great Hamster Massacre?

Kaite Davies's irresistibly funny mystery and Hannah Shaw's spot-on illustrations combine for a quirky, delightful read that is part detective tale, part diary, and altogether hilarious.