Young detective Kate and her mouse-accomplice Rupert are on board a train, to visit Kate's mum in the Arctic. But as soon as the train departs, mysterious things start happening: a packet of ginger nuts goes missing ;a collection of gymnastics trophies are stolen; some ancient scrolls disappear.
Fellow passenger Madame Maude seems the most likely culprit, until a surprising - and delicious - twist turns the whole investigation on its head.
The first title in a two-colour chapter-book series about a bold young detective and a colourful cast of suspects, in a setting worthy of Agatha Christie.
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